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Pregled bibliografske jedinice broj: 198498

Časopis

Autori: Alajbeg, Ž. Iva; Valentić-Peruzović, Melita; Alajbeg, Ivan; Cifrek, Mario
Naslov: The influence of age and dental status on elevator and depressor muscle activity
Izvornik: Journal of oral rehabilitation (0305-182X) 33 (2006); 94-101
Vrsta rada: članak
Ključne riječi: electromyography; masticatory muscles; complete dentures; dentate subjects; mandibular
Sažetak:
SUMMARY The objective of this study was to determine whether the muscle activity at various mandibular positions is affected by age and dental status. Thirty edentulous subjects (E), 20 young dentate individuals (G1) and 20 older dentate individuals (G2) participated in this study. Surface electromyographic (EMG) recordings were obtained from the anterior temporal (T), masseter (M) and depressor muscles (D). Muscle activity was recorded during maximal voluntary contraction (MVC), maximal opening (Omax) and in six different mandibular positions. One way ANOVA and the Bonferroni tests were used to determine the differences between groups. Significant differences between the three tested groups were found at MVC and Omax for all examined muscles (P < 0Æ ; ; ; ; ; 001). The differences in muscle activity in dentate subjects of different age were found in protrusion for depressor muscles (P < 0Æ ; ; ; ; ; 05) and in lateral excursive positions for the working side temporal (P < 0Æ ; ; ; ; ; 05) and non-working side masseter and depressor muscle (P < 0Æ ; ; ; ; ; 05). There was a significant effect regarding the presence of natural teeth or complete dentures in protrusion and maximal protrusion for all muscles (P < 0Æ ; ; ; ; ; 05) and in lateral excursive positions for non-working side temporal (P < 0Æ ; ; ; ; ; 05) and working side masseter muscle (P < 0Æ ; ; ; ; ; 05). Muscle activity at various mandibular positions depends greatly on the presence of the prosthetic appliance, as edentulous subjects had to use higher muscle activity levels (percentages of maximal EMG value) than age matched dentate subjects in order to perform same mandibular movement. Different elevator muscles were preferentially activated in the edentulous subjects when compared with dentate group in lateral excursive positions of the mandible. The pattern of relative muscle activity was not changed because of ageing.
Projekt / tema: 0065911, 0036007, 0065008
Izvorni jezik: ENG
Current Contents: DA
Citation Index: DA
Kategorija: Znanstveni
Znanstvena područja:
Stomatologija
Puni text rada: 198498.Alajbeg_JOR.pdf
Tiskani medij: da
Google Scholar: The influence of age and dental status on elevator and depressor muscle activity



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