Effect of Oral Functionality on Human Masticatory Muscle SEMG

Abstract

SEMG is non invasive method which is being used to study the myoelectric activities of human skeletal muscle. SEMG stands for surface electromyogram. SEMG signal is measured from the surface of skin. Various movements of muscles can be correlated with SEMG activity. In the current research work SEMG signal is analyzed for human masticatory muscles. Masticatory muscles are those muscles which are responsible for various oral functions such as chewing, swallowing, and biting. SEMG in dentistry is still not studied in detail. Still now in dentistry for the evaluation of oral functionality strain gauges are used by putting inside the mouth to evaluate the oral functions in terms of pressure exerted on strain gauge. It is neither subject friendly approach nor economical. Therefore, a new method has been used and analysed for the SEMG masticatory muscles activities In this research work SEMG signals were acquired from three jaw muscles that are temporalis, masseter and submental with help of surface electrode and LabVIEW for different normal oral activities. Thereafter RMS, MAV, SSI, VAR, Power Spectrum were calculated. Result shows that temporalis muscle had the highest activity and the masseter muscle has signal lower than temporalis. The Both two muscle shows same pattern. The submental muscle had the highest activity/signal in water drinking. Submental muscle has the lowest SEMG activity as compared to other two muscles.