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Efeito da tecnica fisioterapeutica (massoterapia) em individuos portadores de desordem temporomandibular miogenica : um estudo eletromiografico

Biblioteca Digital da Unicamp
Publication Date
  • Fisioterapia
  • Eletromiografia
  • Articulação Temporomandibular
  • Medicine


The temporomandibular joint pain desorder is characterized by pain and tendeners in the temporomandibular joint and the mastigatory muscles. The muscle hyperactivity can be a significant characteristic in subjects with Temporomandibular Disorders, which can be associated with pain, muscle fatigue. The aim of this study was to compare the behavior of the the electromyographic activity with major chewing muscles (anterior temporalis, and masseter muscles) by using Parafilm material through analysis of electromyographic signals before and after massage. Sixty female young adult subjects, aged from 17 to 27 years, they being, twenty with normal occlusion and no history of temporomandibular disorder, fourty , with signs and/or symptoms of TMD from parafunctional habits (excessively hard chewing or repeated forced mandibular opening and bruxism), which being twenty submitted to the physiotherapy treatment (massage) and the other twenty were't submitted this treatment. The masticatory activity was performed with the subjects comfortably sat so that the Frankfurt plane was parallel to the floor. Electromyographic exams were carried out using bipolar surface difential electrodes positioned on the anterior temporalis and masseter muscles. The subjects were guided to chew bilaterally and simultaneously of the material. For the study of the masticatory activity the electromyographic signals were processed through rectification, linear envelope, so that the coefficient of variation obtained from the procedure was comparatively analyzed. Ali data were submitted to analysis of variance. For the study of the mastigatory active the electromyographic signals were stored and analyzed for RMS values (Root Mean Square) in the isotonic contraction phases of each muscle. The results of this study indicated that the massage showed decrease hyperactivity and the best relax and that the 87% of the subjects showed improvement signification of the symptoms and sings. In a general way, this treatment is indicated for the accomplishment of the other treatment and the electromyographic exams are very important to analyze of the muscles activity. Other authors say that the common etiologic factor of TMD is the muscle hyperactivity. In a general way, there are relationship between TMD with hyperactivity of the temporal muscle, and the physiotherapic treatment (massage) can elimination of pain and hiperactivity

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