External location of the buccinator muscle to facilitate electromyographic analysis.
Electromyography is frequently used to measure the activity of masticatory muscles. It requires the precise setting of the electrodes, which demands the accurate location of the muscle to be evaluated. The purpose of this study was to investigate the accuracy of an external method to locate the buccinator muscle. Fifteen human cadavers were evaluated and planes were determined on the face using anatomic landmarks. An angle (alpha) was obtained at the intersection of these planes on the central point of buccinator muscle and measured with a protractor. The value of the angle allows locating the central point of buccinator muscle based on anatomic landmarks on the face. Statistical analysis of the collected data indicated an angle of 90 masculine with 95% reliability, thus proving the efficacy of the proposed method.
Department of Dental Materials and Prosthodontics, Dental School of Araraquara, São Paulo State University, Araraquara, SP, Brazil. reginats@foar.unesp.br
Regina Helena Barbosa Tavares
RH
da Silva
Hélio Ferraz
HF
Porciúncula
Renata Savastano Ribeiro
RS
Jardini
Ana Paula Gonçalves
AP
Pita
Ana Paula Dias
AP
Ribeiro
D002102:Cadaver; D002508:Cephalometry / Q000379:methods; D002610:Cheek / Q000033:anatomy & histology*; D004566:Electrodes; D004576:Electromyography / Q000295:instrumentation; D005152:Facial Muscles / Q000033:anatomy & histology*; D006801:Humans