subject:(Dental Materials)

1. Gao, Feng. Color Change of Commercial Resin Composited with Different Photoinitiators.

Degree: 2016, Marquette University

URL: https://epublications.marquette.edu/theses_open/382

► Camphorquinone (CQ) is the most commonly used photoinitiator in light-cured dental resin composites. However CQ is associated with a yellowing effect, which has led manufacturers… (more)

▼ Camphorquinone (CQ) is the most commonly used photoinitiator in light-cured dental resin composites. However CQ is associated with a yellowing effect, which has led manufacturers to add alternative initiators into resin composites to reduce the amount of CQ used. The color change upon polymerization by light and aging in artificial saliva and room air of 8 commercial traditional or bulk-fill resin composites with or without additional photoinitiator(s) beside CQ was studied. The three traditional resin composites with CQ and additional photoinitiator(s) tested were Tetric EvoCeram (Ivoclar Vivadent), AELITE LS Posterior (Bisco), and Vit-l-escence (Ultradent). The two bulk-fill resin composites with CQ and additional photoinitiator(s) tested were Tetric EvoCeram Bulk Fill (Ivoclar Vivadent) and HyperFIL (Parkell, dual cure). The control resin composites with CQ only were Heliomolar (Ivoclar Vivadent, traditional), BEAUTIFIL-Bulk (Shofu, bulk-fill) and SonicFill 2 (Kerr, bulk-fill). Sixteen specimens for each material were prepared with Teflon disc molds (7 mm diameter x 2 mm thickness) and light cured for 40 seconds with a quartz-tungsten-halogen light-curing unit. Samples were aged at 37°C in room air or artificial saliva (n=8). Color measurements were obtained with a spectrophotometer before and after polymerization and after aging for up to three months. Color change was calculated using CIELab and CIEDE2000 formulae. One way and two way ANOVA and a post-hoc SNK test was conducted for statistical analysis. Commercial light-cured resin composites with additional photoinitiators beside CQ had greater color change upon polymerization than those with CQ only. Color changes with aging tended to be greatest within the first hour after light curing, but was not considered clinically perceptible on any resin composites tested except HyperFIL. Tetric EvoCeram Bulk Fill showed good color stability that was comparable to the traditional resin composites upon aging. Advisors/Committee Members: Berzins, David, Stafford, Stafford, Toth, Jeffrey.

Subjects/Keywords: Dental Materials

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APA (6^th Edition):

Gao, F. (2016). Color Change of Commercial Resin Composited with Different Photoinitiators. (Thesis). Marquette University. Retrieved from https://epublications.marquette.edu/theses_open/382

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gao, Feng. “Color Change of Commercial Resin Composited with Different Photoinitiators.” 2016. Thesis, Marquette University. Accessed January 16, 2021. https://epublications.marquette.edu/theses_open/382.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gao, Feng. “Color Change of Commercial Resin Composited with Different Photoinitiators.” 2016. Web. 16 Jan 2021.

Vancouver:

Gao F. Color Change of Commercial Resin Composited with Different Photoinitiators. [Internet] [Thesis]. Marquette University; 2016. [cited 2021 Jan 16]. Available from: https://epublications.marquette.edu/theses_open/382.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gao F. Color Change of Commercial Resin Composited with Different Photoinitiators. [Thesis]. Marquette University; 2016. Available from: https://epublications.marquette.edu/theses_open/382

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

2. Le Roux, Andre Rayne. Design and evaluation of alumina/feldspar resin infiltrated dental composite materials.

Degree: 2008, Durban University of Technology

URL: http://hdl.handle.net/10321/430

►

Submitted in fulfilment of the degree of Doctor of Dental Material Science in the Department of Dental Services, Faculty of Health Sciences, Durban University of… (more)

Subjects/Keywords: Composite materials; Dental bonding; Dental materials

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APA (6^th Edition):

Le Roux, A. R. (2008). Design and evaluation of alumina/feldspar resin infiltrated dental composite materials. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/430

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Le Roux, Andre Rayne. “Design and evaluation of alumina/feldspar resin infiltrated dental composite materials.” 2008. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/430.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Le Roux, Andre Rayne. “Design and evaluation of alumina/feldspar resin infiltrated dental composite materials.” 2008. Web. 16 Jan 2021.

Vancouver:

Le Roux AR. Design and evaluation of alumina/feldspar resin infiltrated dental composite materials. [Internet] [Thesis]. Durban University of Technology; 2008. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/430.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Le Roux AR. Design and evaluation of alumina/feldspar resin infiltrated dental composite materials. [Thesis]. Durban University of Technology; 2008. Available from: http://hdl.handle.net/10321/430

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Florida State University

3. Wu, Jinsong. PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7.

Degree: MS, Biomedical Sciences, 2010, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-0698 ;

►

In mammalian cells, cyclin dependent kinase (CDK) is subjected to negative regulation by a conserved kinase, Wee1. In budding yeast, S. cerevisiae, Swe1 kinase, the… (more)

Subjects/Keywords: Biomedical materials; Dental materials

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APA (6^th Edition):

Wu, J. (2010). PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-0698 ;

Chicago Manual of Style (16^th Edition):

Wu, Jinsong. “PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7.” 2010. Masters Thesis, Florida State University. Accessed January 16, 2021. http://purl.flvc.org/fsu/fd/FSU_migr_etd-0698 ;.

MLA Handbook (7^th Edition):

Wu, Jinsong. “PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7.” 2010. Web. 16 Jan 2021.

Vancouver:

Wu J. PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7. [Internet] [Masters thesis]. Florida State University; 2010. [cited 2021 Jan 16]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-0698 ;.

Council of Science Editors:

Wu J. PP2A and Casein Kinases Regulate SWE1 Degradation Through HSL1 and HSL7. [Masters Thesis]. Florida State University; 2010. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-0698 ;

Durban University of Technology

4. Okeke, Kenneth Nkemdilim. The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins.

Degree: 2017, Durban University of Technology

URL: http://hdl.handle.net/10321/2923

►

Submitted in fulfillment of the requirements for the award of the degree of Master of Health Sciences: Dental Technology, Durban University of Technology, Durban, South… (more)

▼

Submitted in fulfillment of the requirements for the award of the degree of Master of Health Sciences: Dental Technology, Durban University of Technology, Durban, South Africa, 2017.

The poor mechanical properties of denture base acrylic resins can cause dentures to fracture either through impact or stress fatigue. Various metal reinforcing materials such as powders, nets, plates and wires together with synthetic fibres are therefore used to improve the strength properties of denture base acrylic resins. Despite their benefits, they are difficult to apply during fabrication, are costly, non-recyclable, and not environmentally friendly. The suitability of Hibiscus sabdariffa (H. sabdariffa) as a fibre reinforcement material for denture base acrylic resins was therefore investigated. A quantitative research paradigm and a two-phased experimental research design was used. The preliminary study used Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA) and field emission scanning electron microscope (FE-SEM) to assess the characteristics of, and the effect of, mercerisation on H. sabdariffa fibres. In determining the suitability of H. sabdariffa fibres, fibre diameter, fibre density, moisture content and absorption were examined. The main study investigated the mechanical and physical properties of two sample groups namely: the unreinforced (control) group and the H. sabdariffa fibre-reinforced (test) group denture base acrylic resins. The flexural strength, impact strength, specific wear rate, hardness and water absorption behaviour were determined in line with ASTM D 790 and D 256, G 99, D 2583 and D 570 methods of testing, respectively. Parametric and non-parametric tests were used to analyse the mean differences (p = 0.05) between the unreinforced and the H. sabdariffa fibre-reinforced denture base acrylic resins. The preliminary study revealed that H. sabdariffa fibres favourably compared to other lignocellulosic fibres in terms of fibre diameter, fibre density, water content and absorption behaviour. In the main study, a t-test revealed that there were significant differences in flexural strength at 0 °C (p < 0.0001) and at 65 °C (p < 0.0025) between the two sample groups. Similarly, there were significant differences in the impact strength between the two sample groups at 0 °C (p < 0.031) and at 65 °C (p < 0.0001). In contrast to the 200g load, there were significant differences (p < 0.044) in the specific wear rate of the unreinforced and the H. sabdariffa fibre-reinforced denture base acrylic resins at the 500g load. The hardness values revealed no significant differences (p > 0.707) between the two sample groups. There were however, significant differences (p < 0.041) in the water absorption rate between the two sample groups. Overall, the prominent features of this study showed that H. sabdariffa fibre is a suitable reinforcement fibre material for denture base acrylic resins and is in compliance with ISO 1567: 1999. Although this study found that H. sabdariffa fibres can…

Advisors/Committee Members: Vahed, Anisa, Singh, Shalini.

Subjects/Keywords: Dental materials; Roselle; Dental acrylic resins

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APA (6^th Edition):

Okeke, K. N. (2017). The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/2923

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Okeke, Kenneth Nkemdilim. “The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins.” 2017. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/2923.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Okeke, Kenneth Nkemdilim. “The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins.” 2017. Web. 16 Jan 2021.

Vancouver:

Okeke KN. The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins. [Internet] [Thesis]. Durban University of Technology; 2017. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/2923.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Okeke KN. The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins. [Thesis]. Durban University of Technology; 2017. Available from: http://hdl.handle.net/10321/2923

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

5. Kiilu, Paul Muli. An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic.

Degree: 2008, Durban University of Technology

URL: http://hdl.handle.net/10321/446

►

Submitted in fulfillment of the Degree of Master in Technology: Dental Technology in the Department of Dental Services Faculty of Health Sciences, Durban University of… (more)

▼

Submitted in fulfillment of the Degree of Master in Technology: Dental Technology in the Department of Dental Services Faculty of Health Sciences, Durban University of Technology, 2008.

Globally in the field of Dental Technology, polymethyl methacrylate (PMMA) resin continues to be the popular material for the fabrication of denture bases in removable prosthodontics. However, the mechanical strength of the denture base is a concern due to fractures occurring intra-orally or when accidentally dropped. The objective of this in vitro investigation was therefore to evaluate and compare the flexural strength and microstructure of stick® glass fibre and wire mesh reinforced PMMA resin after thermocycling. The selection of the materials used in this study was based primarily on their popularity and availability in South Africa. These materials were selected to ensure that the results of this study would have further implicational value in the commercial dental industry when published. This investigation was conducted by means of fabricating a total of 90 PMMA resin specimens and divided in three groups consisting of 30 specimens each. Sample groups 1 and 2 were reinforced with stick® glass fibres and wire mesh respectively. The un-reinforced sample group was the control. All 90 specimens were thermocycled in water at temperatures between 5˚C and 55˚C for 2100 cycles. The flexural strength of each specimen was tested using a universal testing machine and the microstructure of the fractured surfaces was then analysed using scanning electron microscopes (SEM). SPSS version 15.0 was used for data analysis. A p-value of <0.05 was considered as statistically significant. Data were analysed using parametric and non-parametric statistical methods. Statistically significant differences in flexural strength existed between the three sample groups (p<0.001) with the stick® glass fibre and wire mesh sample groups being significantly superior to the control. Furthermore there was a significant association between fracture modes and sample groups. Microscopic analysis revealed the presence of voids. Statistically, in terms of microstructure (% of voids present), a significant difference existed between all sample groups. With regards to surface texture of the compression and tension sides of the test specimens, significant differences existed between the three sample groups. Furthermore microscopic analysis revealed partial impregnation and distribution of the fibres to the PMMA resin matrix and un-bonding between the wire mesh and PMMA resin matrix. Statistically, the Mann-Whitney test was conducted to compare flexural strength between sample groups with and without voids. The flexural strength was higher in sample groups with voids than those without. This is an important finding from the clinical perspective because, in some structures of dentures, toughness is a desired property. Nevertheless in order to find the long-term data especially on clinical behaviour of these new fibre reinforcement…

Advisors/Committee Members: Vahed, Anisa, Lachman, Nirusha.

Subjects/Keywords: Dental acrylic resins; Polymethylmethacrylate; Dental materials; Flexure

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APA (6^th Edition):

Kiilu, P. M. (2008). An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/446

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kiilu, Paul Muli. “An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic.” 2008. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/446.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kiilu, Paul Muli. “An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic.” 2008. Web. 16 Jan 2021.

Vancouver:

Kiilu PM. An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic. [Internet] [Thesis]. Durban University of Technology; 2008. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/446.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kiilu PM. An in vitro investigation of the flexural strength and microstructure of "stick glass fiber" and "wire mesh" reinforced heat cured denture base acrylic. [Thesis]. Durban University of Technology; 2008. Available from: http://hdl.handle.net/10321/446

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cape Peninsula University of Technology

6. Van Der Poel, Nadine Olive. Mechanical retention of acrylic teeth onto a pure nylon base .

Degree: 2014, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/1536

► A pure nylon denture base does not bond chemically to the acrylic teeth processed into the denture. A mechanical bond is created by boring retention… (more)

▼ A pure nylon denture base does not bond chemically to the acrylic teeth processed into the denture. A mechanical bond is created by boring retention holes (diatorics) into the tooth structure. Concerns are that this form of retention might be insufficient. The purpose of this study is, firstly, to compare the retention of acrylic denture teeth in pure nylon dentures with that of teeth in conventional acrylic denture bases (the acrylic test pieces serving as the control standard), and secondly, to explore whether the technique prescribed for creating diatorics in acrylic teeth for use with pure nylon denture bases potentially has a weakening effect on the acrylic tooth structure. Two sets of 26 identical anterior one-tooth test pieces were created. The first set, labelled N, comprises two different pure nylon denture base materials labelled N1 and N2 – all have diatorics in the acrylic teeth. The second set, labelled A, comprised the same acrylic denture base. The set labelled A1 is the control standard without diatorics in the acrylic teeth and the set labelled A2 has diatorics within the acrylic teeth. A compressive load was applied to these test pieces at an angle of 45 degrees on the palatal surface of the tooth until fracture occurred or maximum load was reached. Resulting data from the first part of the research was analysed by One-Way ANOVA analysis. Resulting data for the second part of the research was analysed via the Chi-square cross- tabulation method. The One-Way ANOVA test revealed that there is no statistical difference in the mean fracture or maximum load in Newton values between the two A (acrylic denture base) groups. There is also no statistical difference in the mean fracture or maximum load in Newton values between the two N (pure nylon denture base) groups. There is, however, a statistically significant difference in the mean fracture or maximum load in Newton values of Group A in comparison to Group N. The Chi-square cross-tabulation indicated that the A groups have very similar breakage patterns, and the N groups have similar breakage patterns respectively. It is concluded that the mechanical retention of acrylic denture teeth in pure nylon denture bases is weaker than the mechanical and chemical retention of acrylic denture teeth in acrylic denture bases. It is also concluded that when diatorics are created as prescribed within the tooth, these do not weaken the tooth structure.

Subjects/Keywords: Dentures; Acrylic resins; Dental materials

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APA (6^th Edition):

Van Der Poel, N. O. (2014). Mechanical retention of acrylic teeth onto a pure nylon base . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/1536

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Van Der Poel, Nadine Olive. “Mechanical retention of acrylic teeth onto a pure nylon base .” 2014. Thesis, Cape Peninsula University of Technology. Accessed January 16, 2021. http://etd.cput.ac.za/handle/20.500.11838/1536.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Van Der Poel, Nadine Olive. “Mechanical retention of acrylic teeth onto a pure nylon base .” 2014. Web. 16 Jan 2021.

Vancouver:

Van Der Poel NO. Mechanical retention of acrylic teeth onto a pure nylon base . [Internet] [Thesis]. Cape Peninsula University of Technology; 2014. [cited 2021 Jan 16]. Available from: http://etd.cput.ac.za/handle/20.500.11838/1536.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Der Poel NO. Mechanical retention of acrylic teeth onto a pure nylon base . [Thesis]. Cape Peninsula University of Technology; 2014. Available from: http://etd.cput.ac.za/handle/20.500.11838/1536

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Commonwealth University

7. Ricci, Alyssa G. THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION.

Degree: MSin Dentistry, Dentistry, 2019, Virginia Commonwealth University

URL: https://doi.org/10.25772/1CJ5-6X66 ; https://scholarscompass.vcu.edu/etd/5789

► Purpose: To evaluate the efficacy of a fluoride-containing orthodontic primer in preventing demineralization adjacent to brackets and compare the quality of enamel on tooth… (more)

Subjects/Keywords: Dental Materials; Orthodontics and Orthodontology

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APA (6^th Edition):

Ricci, A. G. (2019). THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/1CJ5-6X66 ; https://scholarscompass.vcu.edu/etd/5789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ricci, Alyssa G. “THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION.” 2019. Thesis, Virginia Commonwealth University. Accessed January 16, 2021. https://doi.org/10.25772/1CJ5-6X66 ; https://scholarscompass.vcu.edu/etd/5789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ricci, Alyssa G. “THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION.” 2019. Web. 16 Jan 2021.

Vancouver:

Ricci AG. THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION. [Internet] [Thesis]. Virginia Commonwealth University; 2019. [cited 2021 Jan 16]. Available from: https://doi.org/10.25772/1CJ5-6X66 ; https://scholarscompass.vcu.edu/etd/5789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ricci AG. THE EFFICACY OF A FLUORIDE-CONTAINING ORTHODONTIC PRIMER IN PREVENTING DEMINERALIZATION. [Thesis]. Virginia Commonwealth University; 2019. Available from: https://doi.org/10.25772/1CJ5-6X66 ; https://scholarscompass.vcu.edu/etd/5789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

8. Lodhi, Tariq Abbas. Surface hardness of different shades and types of resin composite cured with a high power led light curing unit .

Degree: 2006, University of the Western Cape

URL: http://hdl.handle.net/11394/2076

► Light-emitting diode (LED) curing lights were introduced to the dental market promising a higher curing efficiency than halogen-based lights. The earlier generation curing lights, however,… (more)

Subjects/Keywords: Dental materials

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APA (6^th Edition):

Lodhi, T. A. (2006). Surface hardness of different shades and types of resin composite cured with a high power led light curing unit . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2076

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lodhi, Tariq Abbas. “Surface hardness of different shades and types of resin composite cured with a high power led light curing unit .” 2006. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/2076.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lodhi, Tariq Abbas. “Surface hardness of different shades and types of resin composite cured with a high power led light curing unit .” 2006. Web. 16 Jan 2021.

Vancouver:

Lodhi TA. Surface hardness of different shades and types of resin composite cured with a high power led light curing unit . [Internet] [Thesis]. University of the Western Cape; 2006. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/2076.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lodhi TA. Surface hardness of different shades and types of resin composite cured with a high power led light curing unit . [Thesis]. University of the Western Cape; 2006. Available from: http://hdl.handle.net/11394/2076

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

9. Osio, Mary A. The effect of storage time on dimensional accuracy of elastomeric impression materials .

Degree: 2008, University of the Western Cape

URL: http://hdl.handle.net/11394/2419

► Several factors play a role in stability of impressions made from elastomeric impression materials. These include; polymerization shrinkage, loss of by-products during condensation, thermal contraction… (more)

Subjects/Keywords: Dental Materials

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APA (6^th Edition):

Osio, M. A. (2008). The effect of storage time on dimensional accuracy of elastomeric impression materials . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2419

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Osio, Mary A. “The effect of storage time on dimensional accuracy of elastomeric impression materials .” 2008. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/2419.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Osio, Mary A. “The effect of storage time on dimensional accuracy of elastomeric impression materials .” 2008. Web. 16 Jan 2021.

Vancouver:

Osio MA. The effect of storage time on dimensional accuracy of elastomeric impression materials . [Internet] [Thesis]. University of the Western Cape; 2008. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/2419.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Osio MA. The effect of storage time on dimensional accuracy of elastomeric impression materials . [Thesis]. University of the Western Cape; 2008. Available from: http://hdl.handle.net/11394/2419

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

10. Khayat, Waad. Optical and mechanical properties of polymer-infiltrated ceramics.

Degree: Doctor of Science in Dentistry, Restorative Sciences & Biomaterials, 2018, Boston University

URL: http://hdl.handle.net/2144/32941

► OBJECTIVES: To determine the effects of sintering cycle and curing technique on the translucency, refractive index and flexural strength of novel polymer-infiltrated ceramics. MATERIALS AND… (more)

▼ OBJECTIVES: To determine the effects of sintering cycle and curing technique on the translucency, refractive index and flexural strength of novel polymer-infiltrated ceramics. MATERIALS AND METHODS: Alumina and spinel matrix specimens were fabricated by slip casting (15mm diameter × 2mm thickness). Alumina and spinel specimens were divided into 7 and 6 groups respectively (n=10/group). Alumina groups AHP1, AH1and AM1 were sintered at 1150°C, groups AHP2, AH2 and AM2 at 1200°C and group AFD was fully sintered at 1550°C. Spinel groups SHP1, SH1 and SM1 were sintered at 1500°C and groups SHP2, SH2, SM2 at 1600°C. Density was calculated for each specimen. Groups AM1, AM2, AFD, SM1 and SM2 were the control groups and received no further treatment. Other groups were silanated and dried overnight at 90°C. Then, UDMA-TEGDMA (50-50 mole) resin was prepared and infiltrated into the ceramic specimens under vacuum. Groups AHP1, AHP2, SHP1 and SHP2 were cured by heat at 90°C under pressure of 138 MPa. Groups AH1, AH2, SH1 and SH2 were cured by heat at 90°C. Specimens were polished (1.5mm thickness) and density measured. The total transmission was evaluated with a spectrophotometer (X-rite Ci7600). Refractive index was measured (Presidium Refractive Index Meter II). Biaxial flexural strength was obtained (Instron 5566A) with a crosshead speed of 0.5mm/min. The microstructure was examined using a field emission scanning electron microscope (FESEM-VP, Hitachi SU6600). Statistical analyses were performed using Excel 2016 (Microsoft Office) and JMP 13 (SAS). RESULTS: Polymer-infiltrated alumina and spinel showed significantly lower refractive index (p< .0001), higher translucency (p< .0001) and higher flexural strength (p< .0001) than their corresponding ceramic matrix groups. Sintering temperature of the ceramic matrix had a significant influence on the flexural strength of polymer-infiltrated ceramics. The application of pressure during polymerization significantly improved the translucency but did not influence significantly the flexural strength of polymer-infiltrated ceramics. Groups AHP2 and AH2 showed high strength (comparable to fully sintered alumina). Polymer-infiltrated spinel showed better translucency but lower strength than alumina groups. CONCLUSION: Sintering temperature and curing technique had a significant influence on optical and mechanical properties of polymer-infiltrated ceramics. Advisors/Committee Members: Giordano II, Russell (advisor).

Subjects/Keywords: Dentistry; Ceramics; Dental materials

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APA (6^th Edition):

Khayat, W. (2018). Optical and mechanical properties of polymer-infiltrated ceramics. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/32941

Chicago Manual of Style (16^th Edition):

Khayat, Waad. “Optical and mechanical properties of polymer-infiltrated ceramics.” 2018. Doctoral Dissertation, Boston University. Accessed January 16, 2021. http://hdl.handle.net/2144/32941.

MLA Handbook (7^th Edition):

Khayat, Waad. “Optical and mechanical properties of polymer-infiltrated ceramics.” 2018. Web. 16 Jan 2021.

Vancouver:

Khayat W. Optical and mechanical properties of polymer-infiltrated ceramics. [Internet] [Doctoral dissertation]. Boston University; 2018. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2144/32941.

Council of Science Editors:

Khayat W. Optical and mechanical properties of polymer-infiltrated ceramics. [Doctoral Dissertation]. Boston University; 2018. Available from: http://hdl.handle.net/2144/32941

11. WU XIAOWA. Chemo-mechanical degradation of resin-based hybrid restoratives.

Degree: 2005, National University of Singapore

URL: https://scholarbank.nus.edu.sg/handle/10635/161082

Subjects/Keywords: DENTAL MATERIALS

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

XIAOWA, W. (2005). Chemo-mechanical degradation of resin-based hybrid restoratives. (Thesis). National University of Singapore. Retrieved from https://scholarbank.nus.edu.sg/handle/10635/161082

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

XIAOWA, WU. “Chemo-mechanical degradation of resin-based hybrid restoratives.” 2005. Thesis, National University of Singapore. Accessed January 16, 2021. https://scholarbank.nus.edu.sg/handle/10635/161082.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

XIAOWA, WU. “Chemo-mechanical degradation of resin-based hybrid restoratives.” 2005. Web. 16 Jan 2021.

Vancouver:

XIAOWA W. Chemo-mechanical degradation of resin-based hybrid restoratives. [Internet] [Thesis]. National University of Singapore; 2005. [cited 2021 Jan 16]. Available from: https://scholarbank.nus.edu.sg/handle/10635/161082.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

XIAOWA W. Chemo-mechanical degradation of resin-based hybrid restoratives. [Thesis]. National University of Singapore; 2005. Available from: https://scholarbank.nus.edu.sg/handle/10635/161082

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Hong Kong

12. Choi, Tin-yue, Timothy. Radiographic assessment of some dental restorative materials.

Degree: 2015, University of Hong Kong

URL: http://hdl.handle.net/10722/221003

Subjects/Keywords: Dental materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Choi, Tin-yue, T. (2015). Radiographic assessment of some dental restorative materials. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/221003

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Choi, Tin-yue, Timothy. “Radiographic assessment of some dental restorative materials.” 2015. Thesis, University of Hong Kong. Accessed January 16, 2021. http://hdl.handle.net/10722/221003.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Choi, Tin-yue, Timothy. “Radiographic assessment of some dental restorative materials.” 2015. Web. 16 Jan 2021.

Vancouver:

Choi, Tin-yue T. Radiographic assessment of some dental restorative materials. [Internet] [Thesis]. University of Hong Kong; 2015. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10722/221003.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Choi, Tin-yue T. Radiographic assessment of some dental restorative materials. [Thesis]. University of Hong Kong; 2015. Available from: http://hdl.handle.net/10722/221003

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loyola University Chicago

13. Wagener, Charles J. The Effects of Testing Temperatures on Elastomeric Impression Materials.

Degree: MS, Dentistry, 1981, Loyola University Chicago

URL: https://ecommons.luc.edu/luc_theses/3167

Subjects/Keywords: Dental Materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wagener, C. J. (1981). The Effects of Testing Temperatures on Elastomeric Impression Materials. (Thesis). Loyola University Chicago. Retrieved from https://ecommons.luc.edu/luc_theses/3167

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wagener, Charles J. “The Effects of Testing Temperatures on Elastomeric Impression Materials.” 1981. Thesis, Loyola University Chicago. Accessed January 16, 2021. https://ecommons.luc.edu/luc_theses/3167.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wagener, Charles J. “The Effects of Testing Temperatures on Elastomeric Impression Materials.” 1981. Web. 16 Jan 2021.

Vancouver:

Wagener CJ. The Effects of Testing Temperatures on Elastomeric Impression Materials. [Internet] [Thesis]. Loyola University Chicago; 1981. [cited 2021 Jan 16]. Available from: https://ecommons.luc.edu/luc_theses/3167.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wagener CJ. The Effects of Testing Temperatures on Elastomeric Impression Materials. [Thesis]. Loyola University Chicago; 1981. Available from: https://ecommons.luc.edu/luc_theses/3167

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

IUPUI

14. AlRabiah, Mohammed A. Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics.

Degree: 2015, IUPUI

URL: http://hdl.handle.net/1805/10256

►

Indiana University-Purdue University Indianapolis (IUPUI)

Background: All-ceramic restorations have excellent esthetic outcomes compared with other restorative materials. Lithium disilicate is classified as one of many… (more)

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Indiana University-Purdue University Indianapolis (IUPUI)

Background: All-ceramic restorations have excellent esthetic outcomes compared with other restorative materials. Lithium disilicate is classified as one of many silica-based all-ceramic materials. Currently, companies have provided single-step adhesives, known as universal adhesives, compatible with different restorative materials including lithium disilicate. Many studies have reported greater bond strengths when using a silane to treat the lithium disilicate before applying the bonding agent. Moreover, few studies were published comparing the bond strength when using the universal adhesive alone. Purpose: The objective of this study was to evaluate and compare shear bond strength of three universal adhesives to lithium disilicate ceramic restorative material. Materials and Methods: Three universal adhesive bonding agents were selected from commercially available adhesives. 408 IPS e.max CAD ceramic discs were processed, fired, and etched for 20s. The specimens were divided into six groups. The first three groups used the universal adhesive directly. The remaining three groups were treated with silane. Then, a composite resin cylinder was placed on top of the adhesive using a bonding jig. Each group was subdivided into four equal subgroups (n = 17), subjected to different aging simulation procedures: 24 h, one month with 5000 thermocycles, two months with 5000 cycles, and three months with 5000 cycles. Then, specimens were debonded using shear force by a universal testing machine (MTS). Results: Shear bond strength was greater with silane than without silane (p < 0.0001), regardless of the levels of adhesive or time. Shear bond strength was significantly greater at 24h and 1m than at 2m (p < 0.0001) or 3m (p < 0.0001) regardless of the adhesive or the presence of silane. Debonded specimens were examined under a stereomicroscope at X45 magnification to evaluate the fracture pattern. SEM was used to prove the results were considered as mixed failure. Conclusion: The optimal bonds to lithium disilicate are achieved by application of silane prior to application of a universal adhesive. Although the constituent silane in the universal adhesive was not effective in optimizing the resin to ceramic bond, silane should always be applied to lithium disilicate prior to bonding.

Advisors/Committee Members: Platt, Jeffery A., Levon, John A., Brown, David T., Chu, Tien-Min Gabriel, Bottino, Marco C..

Subjects/Keywords: universal adhesive; lithium disilicate; Ceramics; Dental Materials; Dental Cements; Dental Bonding

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

AlRabiah, M. A. (2015). Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/10256

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

AlRabiah, Mohammed A. “Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics.” 2015. Thesis, IUPUI. Accessed January 16, 2021. http://hdl.handle.net/1805/10256.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

AlRabiah, Mohammed A. “Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics.” 2015. Web. 16 Jan 2021.

Vancouver:

AlRabiah MA. Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics. [Internet] [Thesis]. IUPUI; 2015. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1805/10256.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

AlRabiah MA. Effectiveness of universal adhesive bonding agents on the shear bond strength to lithium disilicate ceramics. [Thesis]. IUPUI; 2015. Available from: http://hdl.handle.net/1805/10256

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cape Peninsula University of Technology

15. Saleh, Tbrah Nuoh Khalifa. Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment .

Degree: 2015, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/2400

► Dental alloys are widely used in direct contact with oral tissue. In recent years after the price of gold significantly increased, cheaper dental materials were… (more)

▼ Dental alloys are widely used in direct contact with oral tissue. In recent years after the price of gold significantly increased, cheaper dental materials were generally considered in the market particularly dental alloys such as cobalt-chromium (Co–Cr), nickel-chromium (Ni–Cr) and titanium alloys. Cobalt– chromium alloys for example, are used in prosthetic for the fabrication of removable partial dentures and also for the fabrication of some fixed prosthetic appliances, due to its excellent properties such as biocompatibility, good mechanical behavior and corrosion resistant. In this work, the corrosion behavior of three different dental alloys, namely PD CASTA H, CERACAST NB Beryllium Free and PD 2000 alloys were studied and tested in Ringers solution (artificial saliva) at different pH values and temperature. The dental alloys were immersed in the Ringers solution for 14 days. The microstructure characterization and composition of selected alloys were done before and after 14 days of corrosion test on artificial saliva, using scanning electron microscopy (SEM). The surface roughness of the alloys was investigated by atomic force microscopy (AFM). The EDS, XRD, and TOF–SIMS were also used in the study. Electrochemical measurement on dental alloys was performed using cyclic voltammetry (CV). A saturated calomel electrode (SCE) was used as reference electrode, platinum was used as counter-electrode and Ni–Cr and Co–Cr alloys were used as working electrode. The polarization curves were plotted in the potential range of -1000 mV/SCE to +1000 mV/SCE at scanning rate of 0.2 mVss-1. It has been shown in the present study that the corrosion behavior of PD CASTA H and PD 2000 alloys, containing Co and a high Cr content, displays the best corrosion resistance compared to CERACAST NB alloy. The influence in the temperature and pH of the solution had effects on the properties of dental alloys. The electrochemical behavior of dental alloys were studied to provide a comprehensive examination of various biomedical materials used in dental application. However, the surface roughness and the surface morphology of the alloys are very important in dental study and application.

Subjects/Keywords: Dental metallurgy; Dental materials; Cobalt alloys; Biomedical materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Saleh, T. N. K. (2015). Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/2400

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Saleh, Tbrah Nuoh Khalifa. “Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment .” 2015. Thesis, Cape Peninsula University of Technology. Accessed January 16, 2021. http://etd.cput.ac.za/handle/20.500.11838/2400.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Saleh, Tbrah Nuoh Khalifa. “Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment .” 2015. Web. 16 Jan 2021.

Vancouver:

Saleh TNK. Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment . [Internet] [Thesis]. Cape Peninsula University of Technology; 2015. [cited 2021 Jan 16]. Available from: http://etd.cput.ac.za/handle/20.500.11838/2400.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Saleh TNK. Influence of temperature and pH on corrosion resistance of Ni–Cr and Co–Cr dental alloys on oral environment . [Thesis]. Cape Peninsula University of Technology; 2015. Available from: http://etd.cput.ac.za/handle/20.500.11838/2400

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

16. Le Roux, Andre Rayne. The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics.

Degree: 2000, Durban University of Technology

URL: http://hdl.handle.net/10321/1909

►

Dissertation submitted in compliance with the requirements for the Master's Degree in Technology: Dental Technology, Technikon Natal, 2000.

The greatest problem in maximizing strength and… (more)

▼

Dissertation submitted in compliance with the requirements for the Master's Degree in Technology: Dental Technology, Technikon Natal, 2000.

The greatest problem in maximizing strength and aesthetic characteristics of metal ceramic restorations arises when there is a lack of available space to allow sufficient thickness of metal alloy and porcelain. This generally results in the metal alloy being reduced to its minimum to allow adequate porcelain thickness. The minimum thickness to which noble metal alloys can safely be reduced, is generally accepted to be 0.3 mm due to previous clinical time-dependent trial and error. Agreement regarding the minimum thickness to which base metal alloys can safely be reduced is still under dispute possibly because base metal alloys have not had the same duration of clinical exposure. The objectives of the present study were: 1. To determine the influence thickness variations of the base metal alloy would have on strength characteristics of metal ceramic restorations and thereby establishing the minimum thickness to which base metal alloys can safely be reduced. 2. To determine the influence thickness variations of porcelain would have on strength and aesthetic characteristics of metal ceramic restorations and thereby establish the minimum thickness to which the porcelain thickness can safely be reduced. 3. To determine which base metal alloy to porcelain thickness ratios would be most suited in order to maximize strength and aesthetic characteristics in metal ceramic restorations where the amounts of available space for the alloy and porcelain are varied. For objective (1) Tensile strength tests to determine and compare the ability of various alloy thickness to resist porcelain fracture were performed in Newtons. For objective (2) Tensile tests to determine and compare the ability of various porcelain thickness to resist porcelain fracture were performed in Newtons.

M

Advisors/Committee Members: Coertze, Dirk J., Somers, Grant.

Subjects/Keywords: Dental ceramics; Dental technology; Dental materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Le Roux, A. R. (2000). The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/1909

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Le Roux, Andre Rayne. “The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics.” 2000. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/1909.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Le Roux, Andre Rayne. “The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics.” 2000. Web. 16 Jan 2021.

Vancouver:

Le Roux AR. The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics. [Internet] [Thesis]. Durban University of Technology; 2000. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/1909.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Le Roux AR. The performance of base metal ceramic alloy restorations with reference to variances in thickness in metal and porcelain in order to establish optimal thickness ratios to maxize strength and aesthetic characteristics. [Thesis]. Durban University of Technology; 2000. Available from: http://hdl.handle.net/10321/1909

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

17. Somers, Grant Brandon. An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations.

Degree: 1997, Durban University of Technology

URL: http://hdl.handle.net/10321/1979

►

Dissertation submitted in compliance with the requirements for the Master's Degree in Technology: Dental Technology, Technikon Natal, 1997.

Globally, difficulties are being experienced by the… (more)

▼

Dissertation submitted in compliance with the requirements for the Master's Degree in Technology: Dental Technology, Technikon Natal, 1997.

Globally, difficulties are being experienced by the dental world to match manufactured prosthetic restorations with natural tooth colour. The primary objective of this study was therefore to evaluate the colour of five different metalceramic base metal alloy oxide layers, and the effects of each oxide layer on the shade of the porcelain applied to its surface. The increase in the cost of gold alloys in the dental industry has influenced manufacturers to provide alloys which are cost effective and have adequate mechanical properties for the manufacture of metal ceramic restorations. Five base metal alloys used in the fabrication of metal-ceramic restorations were selected. The selection of the base metal alloys was based on popularity in the industry, availability and cost. The following five base metal alloys were selected for the investigation: Wiron 99 (nickel-chrome) Ceradium V (nickel-chrome-beryllium) Remanium CD (nickel-chrome) \x95 Wirobond (cobalt-chrome) Heranium (nickel-chrome) Bond-on-4 (low noble content alloy {control group; which was gilded}) II Thirty specimens for each alloy group (180 in all) were cast, using the lost wax technique. Three ceramic layers (notably the opaque, dentine and a glaze layer) were applied to the 20mm in diameter surface of each specimen. .\xB7t Finally both sample groups were tested against a custom shade guide the colour being compared specifically with the Vita A 1 shade. The reason for the inclusion of the shade guide was that, clinically, most shade selections are made by comparing the patient's tooth shade with a manufactured shade guide. A wide selection of shades are available to the ceramist. A certain school of thought that recommends that the metal surfaces of semi-precious metals be gilded with a gold gilding paste before the application of ceramics. in order to block out the dark oxide colour and enhance the colour of the ceramic to a more aesthetic and warmer colour. Therefore, prior to the opaque firing of the control group (Bond-on-4), a gilding layer of Spectra Seal Paste was applied to the surface of each specimen. Following each application of ceramic, the appropriate firing cycles were used to fire the ceramic. The following factors affected the selection of the shade of ceramic used in this study: the shade which is most influenced by the dark oxide layer the more popular shades of ceramic ( the A class of shades). It was established, through a review of the literature (Crispen, 1991), that the most objective form of testing colour at the time of the study, was the use of a reflectance spectrophotometer. This form of testing had been proved to be cost effective and was consequently used in this investigation. III Thesurve

M

Advisors/Committee Members: Waddell, J. N..

Subjects/Keywords: Dental technology; Dental metallurgy; Dental materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Somers, G. B. (1997). An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/1979

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Somers, Grant Brandon. “An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations.” 1997. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/1979.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Somers, Grant Brandon. “An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations.” 1997. Web. 16 Jan 2021.

Vancouver:

Somers GB. An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations. [Internet] [Thesis]. Durban University of Technology; 1997. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/1979.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Somers GB. An evaluation of the colours of base metal alloy oxide layers, and its effects on the shade of base metal alloy metal-ceramic restorations. [Thesis]. Durban University of Technology; 1997. Available from: http://hdl.handle.net/10321/1979

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Hong Kong

18. Tay, Franklin R. An interactive micromorphological study of resin infiltration into acid conditioned dentine.

Degree: 1997, University of Hong Kong

URL: http://hdl.handle.net/10722/50953

Subjects/Keywords: Dental adhesives.; Dental bonding.; Dental materials.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tay, F. R. (1997). An interactive micromorphological study of resin infiltration into acid conditioned dentine. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/50953

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tay, Franklin R. “An interactive micromorphological study of resin infiltration into acid conditioned dentine.” 1997. Thesis, University of Hong Kong. Accessed January 16, 2021. http://hdl.handle.net/10722/50953.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tay, Franklin R. “An interactive micromorphological study of resin infiltration into acid conditioned dentine.” 1997. Web. 16 Jan 2021.

Vancouver:

Tay FR. An interactive micromorphological study of resin infiltration into acid conditioned dentine. [Internet] [Thesis]. University of Hong Kong; 1997. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10722/50953.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tay FR. An interactive micromorphological study of resin infiltration into acid conditioned dentine. [Thesis]. University of Hong Kong; 1997. Available from: http://hdl.handle.net/10722/50953

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

19. Tavarez Vasquez, Ivonne Mariel. Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática.

Degree: Mestrado, Dentística, 2009, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/25/25131/tde-23032010-150219/ ;

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O presente estudo teve como objetivo comparar as resistências adesivas de três cimentos, entre dentina bovina e uma porcelana (Star Light Ceram) através de ensaio… (more)

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O presente estudo teve como objetivo comparar as resistências adesivas de três cimentos, entre dentina bovina e uma porcelana (Star Light Ceram) através de ensaio de cisalhamento em dois períodos de tempo. Foram utilizados incisivos bovinos incluídos numa matriz com resina epóxica. Cilíndros de porcelana (5 mm de altura e 6 mm de diâmetro) foram confeccionados. Foram confeccionados 10 corpos de prova para cada condição experimental. Os grupos foram divididos em: cimento resinoso RelyX ARC; cimento ionômero de vidro modificado por resina; cimento resinoso U100. Os dois primeiros materiais foram condicionados e receberam o seguinte tratamento: ácido fluorídrico por 2 min sobre a porcelana. Lavado e secado, foi aplicado uma camada fina de silano e logo aplicação do sistema de cimentação. A dentina bovina recebeu o seguinte tratamento: condicionamento com acido fosfórico a 35% por 20 s. e sistema adesivo Adper SingleBond 2. Os espécimes foram armazenados em água deionizada a 37° C por 24 horas ou 7 dias . Os espécimes foram submeidos a esforços de cisalhamento em uma máquina universal de ensaios. Os resultados foram submetidos à análise de variância a um critério (=0,05) e teste de Tukey. Houve diferença entre os cimentos estudados. O tratamento superficial da porcelana influenciou a resistência adesiva, porém não houve diferença significante entre os tempos de armazenamento. O cimento resinoso dual RelyX ARC com tratamento de superfície da porcelana apresentou maior resistência adesiva.

The present study had the aim to compare shear bond strengths of three cements used in bovine dentin and porcelain (Star Light Ceram) throught shear test in two periods. Bovine incisors were included in epoxic resin. Porcelain cylinders (5mm height and 6mm diameter) were prepared. 10 samples for each experimental condition were prepared. The groups were divided in: resin cement ARC; resin modified glass ionomer cement; self-adhesive cement U100. The first two materials were conditioned and received the following treatment: the porcelain received hidrofluoridric acid for 2min, rinsed and dried, with a thin silane layer being applied, before cementation; the dentin was conditioned with 35% phosphoric acid for 20s before the adhesive Adper SingleBond 2 application. Samples were stored in deionized watee at 37°C for 24h or 7 days. Samples were evaluated in shear in a universal testing machine. The results were analysed with one way analysis of variance (=0.05) and Tukeys test. There were differences between studied cements. The porcelain surface treatment influenced shear bond strength, however there were no significant differences between storage periods. The dual cured resin cement RelyX ARC with porcelain surface treatment showed higher shear bond strength.

Advisors/Committee Members: Francisconi, Paulo Afonso Silveira.

Subjects/Keywords: Cimentos odontológicos; Dental cements; Dental materials; Dentin; Dentina; Materiais dentários; Porcelan dental; Porcelana dentária

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APA (6^th Edition):

Tavarez Vasquez, I. M. (2009). Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/25/25131/tde-23032010-150219/ ;

Chicago Manual of Style (16^th Edition):

Tavarez Vasquez, Ivonne Mariel. “Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática.” 2009. Masters Thesis, University of São Paulo. Accessed January 16, 2021. http://www.teses.usp.br/teses/disponiveis/25/25131/tde-23032010-150219/ ;.

MLA Handbook (7^th Edition):

Tavarez Vasquez, Ivonne Mariel. “Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática.” 2009. Web. 16 Jan 2021.

Vancouver:

Tavarez Vasquez IM. Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática. [Internet] [Masters thesis]. University of São Paulo; 2009. [cited 2021 Jan 16]. Available from: http://www.teses.usp.br/teses/disponiveis/25/25131/tde-23032010-150219/ ;.

Council of Science Editors:

Tavarez Vasquez IM. Avaliação in vitro da resistência ao cisilhamento de três agentes cimentantes em porcelana feldspática. [Masters Thesis]. University of São Paulo; 2009. Available from: http://www.teses.usp.br/teses/disponiveis/25/25131/tde-23032010-150219/ ;

Universidade Federal de Mato Grosso do Sul

20. Mosele Junior, Oscar Luiz. Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa .

Degree: 2010, Universidade Federal de Mato Grosso do Sul

URL: http://repositorio.cbc.ufms.br:8080/jspui/handle/123456789/393

► Um dos principais objetivos do cimento, que fixa uma prótese ao dente, é o selamento da fenda ou interface entre os mesmos. Uma eventual falha… (more)

Subjects/Keywords: Infiltração Dentária; Cimentos Dentários; Materiais Dentários; Dental Leakage; Dental Cements; Dental Materials

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APA (6^th Edition):

Mosele Junior, O. L. (2010). Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa . (Thesis). Universidade Federal de Mato Grosso do Sul. Retrieved from http://repositorio.cbc.ufms.br:8080/jspui/handle/123456789/393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mosele Junior, Oscar Luiz. “Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa .” 2010. Thesis, Universidade Federal de Mato Grosso do Sul. Accessed January 16, 2021. http://repositorio.cbc.ufms.br:8080/jspui/handle/123456789/393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mosele Junior, Oscar Luiz. “Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa .” 2010. Web. 16 Jan 2021.

Vancouver:

Mosele Junior OL. Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa . [Internet] [Thesis]. Universidade Federal de Mato Grosso do Sul; 2010. [cited 2021 Jan 16]. Available from: http://repositorio.cbc.ufms.br:8080/jspui/handle/123456789/393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mosele Junior OL. Microinfiltração marginal e análise da superfície de cimentos odontológicos empregados em prótese fixa . [Thesis]. Universidade Federal de Mato Grosso do Sul; 2010. Available from: http://repositorio.cbc.ufms.br:8080/jspui/handle/123456789/393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

21. Majeed, Abdul. An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials .

Degree: 2005, University of the Western Cape

URL: http://hdl.handle.net/11394/1408

► The demand for posterior aesthetic restorations has dramatically increased in recent years. Several new materials have been developed with improved aesthetic, adhesive and mechanical properties.… (more)

Subjects/Keywords: Dental materials; Dental bonding; Dental adhesives

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APA (6^th Edition):

Majeed, A. (2005). An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/1408

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Majeed, Abdul. “An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials .” 2005. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/1408.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Majeed, Abdul. “An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials .” 2005. Web. 16 Jan 2021.

Vancouver:

Majeed A. An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials . [Internet] [Thesis]. University of the Western Cape; 2005. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/1408.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Majeed A. An in vitro study of microleakage and surface microhardness of nanocomposite restorative materials . [Thesis]. University of the Western Cape; 2005. Available from: http://hdl.handle.net/11394/1408

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

22. Moosa, Rustim. The effect of dentine-bonding agents on the microleakage of provisional crowns .

Degree: 2005, University of the Western Cape

URL: http://hdl.handle.net/11394/1920

► The use of provisional acrylic crowns is common practice with prosthodontic treatment. Provisional crowns are prone to marginal leakage and poor retention due to weak… (more)

Subjects/Keywords: Dental materials; Dental bonding; Dental adhesives

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APA (6^th Edition):

Moosa, R. (2005). The effect of dentine-bonding agents on the microleakage of provisional crowns . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/1920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moosa, Rustim. “The effect of dentine-bonding agents on the microleakage of provisional crowns .” 2005. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/1920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moosa, Rustim. “The effect of dentine-bonding agents on the microleakage of provisional crowns .” 2005. Web. 16 Jan 2021.

Vancouver:

Moosa R. The effect of dentine-bonding agents on the microleakage of provisional crowns . [Internet] [Thesis]. University of the Western Cape; 2005. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/1920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moosa R. The effect of dentine-bonding agents on the microleakage of provisional crowns . [Thesis]. University of the Western Cape; 2005. Available from: http://hdl.handle.net/11394/1920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

23. Banna, Trinadha Rao. The retentive strength of bonded amalgam restorations .

Degree: 2005, University of the Western Cape

URL: http://hdl.handle.net/11394/2040

► Amalgam bonding agents have been shown to enhance retention of amalgam restorations by mechanical means. However, recent studies showed that the use o glass ionomer… (more)

Subjects/Keywords: Dental materials; Dental bonding; Dental adhesives

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APA (6^th Edition):

Banna, T. R. (2005). The retentive strength of bonded amalgam restorations . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2040

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Banna, Trinadha Rao. “The retentive strength of bonded amalgam restorations .” 2005. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/2040.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Banna, Trinadha Rao. “The retentive strength of bonded amalgam restorations .” 2005. Web. 16 Jan 2021.

Vancouver:

Banna TR. The retentive strength of bonded amalgam restorations . [Internet] [Thesis]. University of the Western Cape; 2005. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/2040.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Banna TR. The retentive strength of bonded amalgam restorations . [Thesis]. University of the Western Cape; 2005. Available from: http://hdl.handle.net/11394/2040

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

24. Du Bois, Alexander Hermann. Dentine permeability and cytotoxicity of a dentine bonding agent .

Degree: 2006, University of the Western Cape

URL: http://hdl.handle.net/11394/2254

► The objectives of this study were to create an in vitro situation which closest resembled the clinical situation by inclusion of human dentine discs at… (more)

Subjects/Keywords: Dental materials; Dental bonding; Dental adhesives

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Du Bois, A. H. (2006). Dentine permeability and cytotoxicity of a dentine bonding agent . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Du Bois, Alexander Hermann. “Dentine permeability and cytotoxicity of a dentine bonding agent .” 2006. Thesis, University of the Western Cape. Accessed January 16, 2021. http://hdl.handle.net/11394/2254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Du Bois, Alexander Hermann. “Dentine permeability and cytotoxicity of a dentine bonding agent .” 2006. Web. 16 Jan 2021.

Vancouver:

Du Bois AH. Dentine permeability and cytotoxicity of a dentine bonding agent . [Internet] [Thesis]. University of the Western Cape; 2006. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11394/2254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Du Bois AH. Dentine permeability and cytotoxicity of a dentine bonding agent . [Thesis]. University of the Western Cape; 2006. Available from: http://hdl.handle.net/11394/2254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

25. Naidoo, Ansuya. Colour stability of three modern ceramic materials after repeated firing.

Degree: 2017, Durban University of Technology

URL: http://hdl.handle.net/10321/2566

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Submitted in full compliance with the requirements for the Master of Health Science Degree: Dental Technology, Durban University of Technology, Durban, South Africa, 2017.

Background… (more)

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Submitted in full compliance with the requirements for the Master of Health Science Degree: Dental Technology, Durban University of Technology, Durban, South Africa, 2017.

Background Shade matching is a challenging aspect of aesthetic dentistry (Vichi et al., 2011). For a long time, aesthetically pleasing prostheses have been achieved using the porcelain-fused-to-metal crown whereby the metal is masked with an opaque layer and then consecutive layers of veneering ceramic are built up (McLean, 1979). The growing popularity of all-ceramic restorations has created a need for an understanding of its colour characteristics in preference to porcelain fused to metal restorations. The study aims to assist dental technicians in making a more informed decision when choosing an all-ceramic system in terms of colour stability. Objectives The objectives were to identify colour changes of the zirconia after each firing cycle and defining if there are any microstructural changes in the zirconia cores after subsequent firing. Methods This is a quantitative study with a sample size of eighteen which was used for each experimental group. Green state zirconia blocks from Cercon (Dentsply DeguDent, USA), Lava (3M ESPE,USA), and Zirkon Zahn (Zirkonzahn Gmbh, Bruneck, Italy) were trimmed, finished and sintered to a final thickness of 0.5mm according to the manufacturers’ instructions. Each sample group was obtained directly from the manufacturer. In each group, nine specimens were shaded and nine were unshaded. The colour of each specimen was recorded before being exposed to firing cycles. This data formed the control group. All specimens were subjected to three firings and spectrophotometer reading. After each firing, SEM analysis was done after one and three firings. There was a total of thirty six specimens x three firings; n = 108. The raw data for the statistical analysis was obtained from the spectrophotometer readings recorded after the firings (n=108). The data of the study was analyzed using the SPSS version 22.0. The data were compared among the three groups using Pearsons chi square tests, where the data of the firings were measured as a binary or nominal variable, and using t-tests where a measured normally distributed variable was compared. The general linear model (GLM) looked at combinations of the variables and their effects on the dependant variable. The Multivariate tests table indicates the actual result of the one-way MANOVA. Results The Cercon results for both the control and experimental groups reveal the same result patterns and was maintained before and after firing. Lava also revealed the same results before and after firing, however, the cores in the control group differed in colour. The Zirkon Zahn system proved to be the least stable in colour. Conclusion This study supports the hypothesis that colour differences would occur relative to the number of firings for shaded zirconia. It can be concluded that Cercon displayed the most stable results in terms of colour. The acumen gained…

Advisors/Committee Members: Adam, Jamila Khatoon, Zondi, M.P.P..

Subjects/Keywords: Dentistry – Aesthetic aspects; Crowns (Dentistry); Dental ceramic metals; Dental materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Naidoo, A. (2017). Colour stability of three modern ceramic materials after repeated firing. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/2566

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Naidoo, Ansuya. “Colour stability of three modern ceramic materials after repeated firing.” 2017. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/2566.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Naidoo, Ansuya. “Colour stability of three modern ceramic materials after repeated firing.” 2017. Web. 16 Jan 2021.

Vancouver:

Naidoo A. Colour stability of three modern ceramic materials after repeated firing. [Internet] [Thesis]. Durban University of Technology; 2017. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/2566.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Naidoo A. Colour stability of three modern ceramic materials after repeated firing. [Thesis]. Durban University of Technology; 2017. Available from: http://hdl.handle.net/10321/2566

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Hong Kong

26. Lam, Wiley T. C. In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements.

Degree: 1996, University of Hong Kong

URL: http://hdl.handle.net/10722/50964

Subjects/Keywords: Dental materials.; Ionomers.; Dental cements.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lam, W. T. C. (1996). In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/50964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lam, Wiley T C. “In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements.” 1996. Thesis, University of Hong Kong. Accessed January 16, 2021. http://hdl.handle.net/10722/50964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lam, Wiley T C. “In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements.” 1996. Web. 16 Jan 2021.

Vancouver:

Lam WTC. In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements. [Internet] [Thesis]. University of Hong Kong; 1996. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10722/50964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lam WTC. In vitro evaluation of fluoride release and artificial caries formation with selected glass polyalkenoate cements. [Thesis]. University of Hong Kong; 1996. Available from: http://hdl.handle.net/10722/50964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

27. Waddell, John Neil. The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain.

Degree: 1993, Durban University of Technology

URL: http://hdl.handle.net/10321/2160

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Dissertation submitted in compliance with the requirements for the Master's Diploma in Technology: Dental Technology, Technikon Natal, 1993.

The unpredictability of solder joints in dental… (more)

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Dissertation submitted in compliance with the requirements for the Master's Diploma in Technology: Dental Technology, Technikon Natal, 1993.

The unpredictability of solder joints in dental base metal alloys constitute a major problem. This study aimed to establish whether gold plating the joint surfaces of a metal ceramic base metal alloy prior to postceramic soldering would enhance the predictability of the soldering method and joint strength. 150 standardised test specimens were prepared from 3 Oegussa dental alloys, viz Resistal P (Nier), Oegulor M (AUPt) and Realor (PdAU). The Resistal P specimens were subjected to 6 porcelain firing cycles and solder joint surfaces of 40 specimens gold plated prior to soldering, using gold plating equipment and solutions found in the jewellery industry. suitable fluxes were used and all soldering was done in a porcelain furnace. First the soldering method was validated by soldering 20 oegulor M specimens and determining the tensile strength of the 10 joints in an Instron testing machine. The data were then compared with the ISO minimum standards. The soldering method proved sound and a control was thus established. secondly, using 3 alloy combinations without gold plating, 30 solder joints were made and their tensile strengths determined. This established the level of predictability and strength and parameters for comparison. Thirdly, the above procedure was repeated, but the Resistal P specimen joint surfaces were gold plated prior to investing for soldering. The levels of predictability and strength were then compared with the parameters set. The fracture sites of broken joints were examined and photographed using a metallurgical microscope. The data were analysed using 4 statistical tests. The Oegulor M control group solder joints were the strongest and the Resistal P joints the weakest. The success rates for the non-plated joints were; oegulor M to oegulor M = 100%, Resistal P to oegulor M = 90%, Resistal P to Realor = 80% and Resistal P to Resistal P = 60%. The success rates for the gold plated joints were; Resistal P to oegulor M = 60%, Resistal P to Realor = 40% and Resistal P to Resistal P = 80%. This study found, under the circumstances of testing, that gold plating of the base metal alloy prior to investing for postceramic soldering did not enhance the strength, solderability and predictability of the solder joints to an extent that a flux that does not discolour porcelain can be used.

M

Advisors/Committee Members: Coertze, Dirk J., Engelbrecht, Nick J. H..

Subjects/Keywords: Dental metallurgy; Dental materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Waddell, J. N. (1993). The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/2160

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Waddell, John Neil. “The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain.” 1993. Thesis, Durban University of Technology. Accessed January 16, 2021. http://hdl.handle.net/10321/2160.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Waddell, John Neil. “The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain.” 1993. Web. 16 Jan 2021.

Vancouver:

Waddell JN. The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain. [Internet] [Thesis]. Durban University of Technology; 1993. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10321/2160.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Waddell JN. The evaluation of the applicability of using gold plating to enhance the predictability and strength of base metal post ceramic gold solder joints when using a flux that does not discolour the porcelain. [Thesis]. Durban University of Technology; 1993. Available from: http://hdl.handle.net/10321/2160

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Connecticut

28. Chang, Philip. Effect of Endodontic Sealers on Dentin Strength.

Degree: Master of Dental Science, Dental Science, 2020, University of Connecticut

URL: https://opencommons.uconn.edu/gs_theses/1525

► Introduction: The ideal endodontic sealer should be biocompatible, dimensionally stable, and have proper bond strength to dentin. The aim of this study was to… (more)

▼ Introduction: The ideal endodontic sealer should be biocompatible, dimensionally stable, and have proper bond strength to dentin. The aim of this study was to apply a hoop stress to sectioned teeth discs which have been obturated with AH Plus sealer with no gutta percha, EndoSequence Bioceramic Sealer (BC Sealer) with no gutta percha, and Tetranite® with no gutta percha until fracture occurred and then compared the failure stresses. Methods: Teeth were divided into three groups based on the sealer type used. The teeth were sectioned into 2 mm thick discs and load was applied using a piston until fracture took place. The stress generated by the sealer on the dentinal wall was then calculated using a hoop stress formula. One – way ANOVA with a 95% multiple range test was used to compare hoop stresses at failure for all groups (SPSS, TBM). Tukey HSD multiple comparisons test was also implemented to compare values of each group. Linear regression was used to examine failure load versus dentin wall thickness (SigmaPlot 13.0, Systa Software). Results: Fracture loads forces exerted by the various sealers on the internal tooth wall, demonstrated significant differences amongst all three groups (p < 0.0001). The mean and standard deviation values for failure stress loads were 499.80±120.5555 MPa, 622.3125± 83.7154 MPa, and 708.2357± 68.2772 MPa for the AH Plus sealer with no gutta-percha group, BC sealer with no gutta-percha group, and Tetranite® group respectively. Multiple comparisons showed significant differences between the AH Plus sealer group and BC sealer group (p < 0.002), AH Plus sealer group and Tetranite® group (p < 0.0001), and BC sealer group and Tetranite® group (p < 0.042). Conclusions: Implementing the hoop stress introduces a novel method for the field of endodontics, of testing sealers and their influence on dentin strength. The current knowledge gap in endodontics lacks a specific method or test application for sealers to potentially enhance dentin strength. The use of piston drive hoop stress test in conjugation with the MTS 858 Mini Bionix® II Biomaterials Testing System is able to provide a method for testing failure stress loads on obturated sectioned teeth. Tetranite® significantly increased fracture stress compared to AH Plus sealer and Endosequence BC sealer. The novel Tetranite group enhanced dentin strength in this study Advisors/Committee Members: Dr. Robert Kelly, Dr. Kamran Safavi, Dr. Qiang Zhu, Dr. Robert Kelly.

Subjects/Keywords: endodontics; sealer; dental; dental materials; root canal; fracture; stress; load

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chang, P. (2020). Effect of Endodontic Sealers on Dentin Strength. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/1525

Chicago Manual of Style (16^th Edition):

Chang, Philip. “Effect of Endodontic Sealers on Dentin Strength.” 2020. Masters Thesis, University of Connecticut. Accessed January 16, 2021. https://opencommons.uconn.edu/gs_theses/1525.

MLA Handbook (7^th Edition):

Chang, Philip. “Effect of Endodontic Sealers on Dentin Strength.” 2020. Web. 16 Jan 2021.

Vancouver:

Chang P. Effect of Endodontic Sealers on Dentin Strength. [Internet] [Masters thesis]. University of Connecticut; 2020. [cited 2021 Jan 16]. Available from: https://opencommons.uconn.edu/gs_theses/1525.

Council of Science Editors:

Chang P. Effect of Endodontic Sealers on Dentin Strength. [Masters Thesis]. University of Connecticut; 2020. Available from: https://opencommons.uconn.edu/gs_theses/1525

IUPUI

29. Avery, David Roger. A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation.

Degree: 1971, IUPUI

URL: http://hdl.handle.net/1805/3679

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Indiana University-Purdue University Indianapolis (IUPUI)

Certain properties of a representative composite material were evaluated by in vitro testing and compared to those of other types… (more)

Subjects/Keywords: Dental Amalgam; Dental Materials

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Avery, D. R. (1971). A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/3679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Avery, David Roger. “A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation.” 1971. Thesis, IUPUI. Accessed January 16, 2021. http://hdl.handle.net/1805/3679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Avery, David Roger. “A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation.” 1971. Web. 16 Jan 2021.

Vancouver:

Avery DR. A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation. [Internet] [Thesis]. IUPUI; 1971. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1805/3679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Avery DR. A composite resin versus an amalgam: a study of certain properties and the design and initiation of a clinical investigation. [Thesis]. IUPUI; 1971. Available from: http://hdl.handle.net/1805/3679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

IUPUI

30. Alqahtani, Nasser M. Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses.

Degree: 2016, IUPUI

URL: http://hdl.handle.net/1805/10236

►

Indiana University-Purdue University Indianapolis (IUPUI), Indiana University School of Dentistry

Background: With the emerging of digital dentistry, IPS e.max® CAD lithium disilicate (LD) glass-ceramic material… (more)

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Indiana University-Purdue University Indianapolis (IUPUI), Indiana University School of Dentistry

Background: With the emerging of digital dentistry, IPS e.max® CAD lithium disilicate (LD) glass-ceramic material has become one of the most popular esthetic restorative materials in digital assisted dental esthetic restoration. The mechanical and optical properties of this material have been investigated in several studies. However, there is a lack of information and consensus regarding the optical properties of IPS e.max® LD glass-ceramic materials. Objectives: 1) To investigate the optical properties as translucency parameters (TP), Contrast ratio (CR), light transmissions (Lt) and color changes (CC) between high-translucent (HT) and low-translucent (LT) IPS e.max® CAD LD glass-ceramic materials with different crystalline phases and thickness in different firing stages. 2) To investigate the optical properties as TP, CR, Lt and CC of each translucent (HT and LT) IPS e.max® CAD LD glass-ceramic materials with different crystalline phases and thickness in different firing stages. 3) To determine the mathematical relationships of thicknesses of IPS e.max® CAD LD glass-ceramics materials with TP and Lt. Materials and methods: The total of 120 of shade A2 IPS max CAD samples (HT and LT) were prepared into square shape (15.25 mm X 15.25 mm) and were divided into two main groups according to the material translucency (HT and LT) (n=60). Each main group was further divided into 5 sub-groups according to the thickness (1.00, 1.25, 1.5, 1.75, and 2.00 mm) (n=12). Each thickness group was assigned into three groups based on different crystallization (firing) temperatures (750, 820 °C in single stage heating schedule with 1 second and 10 second holding times, respectively, and 840 °C with two-stage heating schedule (RECOM) (820°C, 840 °C with 10 second and 7 min holding time, respectively) as recommended by manufacturer (n=4). CIEL*a*b*, TP, CR, and Lt were measured and calculated for all samples. Statistical analysis: The effects of the test results were evaluated using 3-way ANOVA with factors for Translucency (HT and LT), Firing Temperature (750, 850, and RECOM) and Thickness (1, 1.25, 1.5, 1.75, and 2), as well as all two-way and three-way interactions among the factors. Pair-wise comparisons were made using Least Significant Differences to control the overall significance level at 5%. Results: The mean irradiance and TP for both HT and LT decrease as the thickness of the samples increases from 1 to 2mm with significant difference between the thickness groups within each material translucency groups (HT and LT) and between both HT and LT. The coefficients of absorption (c) of the two materials were calculated. The effective incidence irradiance when material thickness approaches zero (Ie) was also calculated. There is an unexpected spectral peak shift as the thickness of the samples increases. There is no statistically significant difference in Ie at 750˚C and 820 ˚C between the HT and LT. However, there is a…

Advisors/Committee Members: Chu, Tien-Min Gabriel, Phasuk, Kamolphob, Morton, Dean, Levon, John A..

Subjects/Keywords: Optical properties; Lithium disilicate; Ceramics; Esthetics, Dental; Dental Materials; Ceramics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alqahtani, N. M. (2016). Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/10236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alqahtani, Nasser M. “Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses.” 2016. Thesis, IUPUI. Accessed January 16, 2021. http://hdl.handle.net/1805/10236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alqahtani, Nasser M. “Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses.” 2016. Web. 16 Jan 2021.

Vancouver:

Alqahtani NM. Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses. [Internet] [Thesis]. IUPUI; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1805/10236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alqahtani NM. Optical Properties Of CAD-CAM Lithium Disilicate Glass-Ceramic In Different Firing Temperatures And Thicknesses. [Thesis]. IUPUI; 2016. Available from: http://hdl.handle.net/1805/10236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations