Mastigação: análise pela eletroneuromiografia e eletrognatografia - seu uso na clínica fonoaudiológica

• Autor(a) principal: Oncins, Maristella Cecco
• Data de Publicação: 2004
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_SP
• Texto Completo: https://tede2.pucsp.br/handle/handle/11946
• topic: Ciclo mastigatório; Mastigacao; CNPQ::CIENCIAS DA SAUDE::FONOAUDIOLOGIA

The present survey aims to observe the chewing circle pattern(s) of salutary individuais without temporomandibular articulation symptoms and to relate them to the speech therapy clinic. 26 individuais took part of the experience, aging from 25 to 46 years, 5 being men and 21 women. The individuais were chosen from an application questionnaire, followed by a speech therapy selection including occlusion photos, with the purpose of assessing the occlusion levei and the presence of ali dental elements. The method applied was the electric activity analysis of the masseter and temporal muscles - right and left - through the electroneuromyography in the resting state, in vigil, and in normal chewing provoked by dried grapes without seed, strictly in the morning. At the same time the electronatography exam was achieved which scanned the jaw movement in each chewing act during mastication. The results from the electrognatography showed that those taking part in th research presented a one side chewing preference - right or left - over 55% out of 12 chewing acts assessed. Through the electroneuromiography the temporal muscle presented fundamental importance in rest position and the masseter muscle presented greater activity on the preferred chewing side during the provoked habitual chewing. Although there occurred a chewing preference, the estomatognático system was balan ed, what did not occur with patients who showed temporomandibular dysfunction. The brain cortex function, in the chewing process, is quite complex and it is not restricted to the lowering and lifting movement of the jaw. The performance of the central generator patterns, including the sensorial feedback, not only belonging to the jaw movement, but also to the performance of the tongue, lips, periodontum, among others, are intimately connected to the balance of the functions. According to that result it is possible to think about further researches taking into consideration the number of individuais who have taken part in this study and the different methods applied to verify this constancy, time durations and different timetables. Another question is the reflection about alternate bilateral chewing patterns for the speech therapy clinic. There have been other factors other than the one side chewing preference, which make the not-symptomatic individual different from the symptomatic one,: related to thle ATM dysfunction, whereas there is an unbalance in the fírst case, there is a present balance of the estomatognático system in the second case; the doubt however about the role of the chewing preference stilllasts. It could be thought that complementary exams, as described above, could be part of the speech therapy clínic, aiming new findings which could contribute to the improvement of the oral motility area