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IUPUI

1. Saad, Amir N., 1979-. Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading.

Degree: 2009, IUPUI

Indiana University-Purdue University Indianapolis (IUPUI)

The purpose of this study was to evaluate the fracture resistance of three post and core systems in endodontically treated teeth by loading to failure, and to measure marginal gaps before and after cyclic loading. Sixty extracted canines were assigned to three groups. The groups tested were: 1) Single cast post and core (Group CP). 2) Prefabricated metal post and composite resin core (Group MR). 3) Glass fiber post and composite resin core (Group FR). All teeth were obturated and prepared to receive a post and core with a coping. Thirty teeth (10 from each group) were loaded to failure, and the other 30 teeth were fatigue-loaded. The marginal gaps on the facial and lingual surface of the fatigue-loaded group were measured before and after cyclic loading. There were two hypotheses for this study. The first was that the FR group would have less marginal gap opening on the lingual surface than the other groups. The second was that the CP group would have a higher load at failure than the other groups. Group CP was found to have a significantly smaller pre-loading marginal gap than group FR (p = 0.0265) and group MR (p = 0.0273), while groups FR and MR did not have a significantly different pre-loading marginal gaps (p = 0.86). Group FR had significantly less change in marginal gap than group MR (p = 0.0013). Groups CP and MR did not have significantly different changes in marginal gap (p = 0.09). Groups CP and FR did not have significantly different changes in marginal gap (p = 0.11). The three post types did not have significantly different maximum loads to failure (p= 0.49), moments of inertia at cervical area (p = 0.75), or moments of inertia at fracture site (p=0.12). There was no significant difference between groups CP, FR, and MR in the load-to-failure test. Group CP demonstrated the highest load-to-failure values; however, the highest load-to-failure mean was for group MR. All fractures observed in this study were catastrophic. Group FR demonstrated better stress distribution and caused no early fractures in the fatigue-loading group. All groups demonstrated significant marginal gap changes on the lingual surface after fatigue loading; however, group FR demonstrated <45 μm marginal gap opening. In group FR, the reduced marginal gap opening was attributed to the use of Panavia 21 with the proper surface treatments to bond to the tooth structure, the resin composite, and the metal coping.

Advisors/Committee Members: Platt, Jeffrey A., 1958-, Matis, Bruce A., Andres, Carl J., 1942-, Katona, Thomas R., Levon, John A..

Subjects/Keywords: Single cone technique; Beautycast; Novocast; Realseal; Profile OS; Resilon; Cast post and core; Prefabricated post; Tin plating; Load to failure; Paracem Universal DC; Peerless Post; Zinc phosphate; Panavia 21; Proflie series 29; Parapost XH; Elektra; Endo ITR; optibond solo plus; 2 mm ferrule; Corerestore 2; Die hardener; Die spacer; Examix; Silky rock violet; Fatigue loading; Post and Core Technique; Tooth Fractures  – prevention & control; Root Canal Therapy  – adverse effects

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APA (6th Edition):

Saad, Amir N., 1. (2009). Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/1929

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

Chicago Manual of Style (16th Edition):

Saad, Amir N., 1979-. “Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading.” 2009. Thesis, IUPUI. Accessed September 17, 2019. http://hdl.handle.net/1805/1929.

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

MLA Handbook (7th Edition):

Saad, Amir N., 1979-. “Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading.” 2009. Web. 17 Sep 2019.

Vancouver:

Saad, Amir N. 1. Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading. [Internet] [Thesis]. IUPUI; 2009. [cited 2019 Sep 17]. Available from: http://hdl.handle.net/1805/1929.

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

Council of Science Editors:

Saad, Amir N. 1. Evaluation of fracture resistance of three post and core systems in endodontically treated teeth under loading to failure; and marginal gap measurement before and after cyclic loading. [Thesis]. IUPUI; 2009. Available from: http://hdl.handle.net/1805/1929

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

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