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1. Κοσιώνη, Αναστασία. Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη.

Degree: 1994, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)

The aim of the present study was to investigate any variations in the masseteric jaw-jerk reflex and the silent period related to gender, age and rehabilitation with complete dentures. Surface electromyographic recordings were obtained after chin taps from the masseter muscle of the preferred chewing side, during mandibular rest and at moderate intercuspal clenching (40% of the individual maximum clenching masseteric RMS activity), using a computerized recording and analysis system. The reflexes were elicited in 22 younger dentate adults, 22 older dentate adults, 22 older experienced complete denture wearers and seven older subjects who had been fitted with new complete dentures one to three weeks previously. In the first three groups gender distribution was equal. The within and between-session reproducibility of the jaw- jerk at rest using the present methodology, was tested in five young females and found satisfactory. During intercuspal clenching, the occurrence of the jaw-jerk was reduced compared to the rest values in all groups except for the inexperienced denture wearers. This contrast was smaller in the experienced denture wearers. It was suggested that the simultaneous activation of the periodontal ligament receptors may occasionally inhibit the masseteric monosynaptic excitation. In the denture wearers a potential weaker inhibitory effect of the mucosal mechanoreceptors was speculated. Moreover when clenching, the amplitudes were higher and the latencies shorter (p<0.05). The recorded silent period in all groups fell into four distinctive patterns: one simple and three combined, including an early and a late phase of depression. Variation in the silent period duration was not significant between the different subject groups (p>0.05).The duration was however affected by the silent period type (p<0.05), thus by the measuring technique. In the female subjects in all groups, a systematic tendency was observed towards shorter latencies in the jaw-jerk and the early silent period, and towards increased amplitudes of the jaw-jerk, particularly at rest. Increased gender variation was observed in the denture wearers. However those differences were usually not statistically significant. The age-related variation in the jaw-jerk and the silent period was investigated in 22 younger and in 22 older dentate adults. In the older participants, the occurrence of the jaw-jerk was reduced, the latency of the jaw-jerk at rest and the latency of the early silent period were increased and the amplitude of the jaw-jerk at rest was diminished (p<0.05). The differences observed were related to the age changes in the various elements of the responsible reflex arcs, including the sense organs, the muscles, the peripheral nerves and the central nervous system. The effect of denture wearing on the jaw-jerk and the silent period was investigated in 22 older dentate subjects and in 22 older experienced denture wearers. Both reflexes were present in the denture wearers. In the denture subjects the occurrence of the jaw-jerk, the duration…

Subjects/Keywords: Ηλεκτρομυογραφία; Μυοτατικό αντανακλαστικό; Μασητήρας μυς; Περίοδος σιγής; Ηλικία; Φύλο; Οδοντοστοιχίες; Προσαρμογή; Electromyography; Jaw-jerk reflex; Masseter muscle; Silent period; Age; Gender; Dentures; Adaptation

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APA (6th Edition):

Κοσιώνη, . . (1994). Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη. (Thesis). National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Retrieved from http://hdl.handle.net/10442/hedi/25161

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):

Κοσιώνη, Αναστασία. “Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη.” 1994. Thesis, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Accessed February 28, 2021. http://hdl.handle.net/10442/hedi/25161.

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

MLA Handbook (7th Edition):

Κοσιώνη, Αναστασία. “Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη.” 1994. Web. 28 Feb 2021.

Vancouver:

Κοσιώνη . Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη. [Internet] [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 1994. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10442/hedi/25161.

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

Council of Science Editors:

Κοσιώνη . Η επίδραση του φύλου, της ηλικίας και της χρήσης ολικών οδοντοστοιχιών στο μυοτατικό αντανακλαστικό και στην περίοδο σιγής του μασητήρα: ηλεκτρομυογραφική μελέτη. [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 1994. Available from: http://hdl.handle.net/10442/hedi/25161

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

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