Relação entre os músculos masseter e esternocleidomastóideo nas situações de flexão e rotação da coluna cervical, em mastigação e máxima intercuspidação habitual, analisados através da atividade eletromiográfica

Abstract

Nowadays, with the new technologies added to cell phones, high levels of stress and the accelerated pace that life has suffered, individuals have unconsciously adopted new and different body postures that directly or indirectly interferes on the position of the spine. One of the main muscles postures of the cervical region of the spine is the sternocleidomastoid, which is important for the chewing function and for the various frontal, temporal and intraoral views. Objective: The aim of this study is to analyze the relation between the masseter and sternocleidomastoid muscles, through electromyographic investigation, in different positions of the cervical spine and in different moments of masticatory activity. Methodology: To do so, an electromyograph will be used, which will collect data for 5s in each situation, with the help of software application EMGLab V1.1 - EMG System Brasil. It is expected that spine alterations interteres on masticatory efficiency since both the muscles are important to the posture balance and masticatory eficiency.