Neuromuscular coordination and asymmetry of electromyographic activity in asymptomatic subjects to temporomandibular dysfunction / Coordenação neuromuscular e assimetria de atividade eletromiográfica em sujeitos assintomáticos para disfunção temporomandibular

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The contraction pattern of paired muscles can be investigated using surface electromyography (EMG). This makes it possible to know when and how a muscle is activated as well as determine the coordination of different muscles involved in the movement. Furthermore, the influence of occlusal condition on the stomatognathic function can also be evaluated by electromyography. This study aimed to examine and describe the characteristics of coordination and (a)symmetry in the masseter and temporal muscles during the previous static and dynamic tests in a population of subjects young healthy adults, asymptomatic for temporomandibular dysfunction, using a new electromyographic instrument. For this, 100 subjects participated in the study. All performed the static test and 60 subjects were selected to perform the dynamic test of the jaw. The results showed that the young adults subjects evaluated showed average values of the electromyographic index within the normal range already set previously for other people. This pattern of normality seems to reflect a good performance of the stomatognathic system, as found in myofunctional evaluation. Probably the figures are valid for the Brazilian population, but studies with larger samples should be conducted.

ASSUNTO(S)

masseter muscle electromyography temporal muscle asymptomatic subjects eletromiografia sujeitos assintomáticos músculo masseter músculo temporal

ACESSO AO ARTIGO

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