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How the anterior, middle and posterior portions of the temporalis muscle work during mastication
Nagae, Mirian; Bérzin, Fausto; Alves, Marcelo Corrêa; Bérzin, Maria da Graça Rodrigues.
  • Nagae, Mirian; University of Campinas. Faculty of Medical Science Department. Campinas. BR
  • Bérzin, Fausto; University of Campinas. Piracicaba Dental School. Morphology Department. Piracicaba. BR
  • Alves, Marcelo Corrêa; University of São Paulo. Faculty of Medical Science Department. Superior School of Agriculture Luiz de Queiroz. Piracicaba. BR
  • Bérzin, Maria da Graça Rodrigues; Electromyography Center. Psychologist. Piracicaba. BR
Braz. j. oral sci ; 10(3): 213-216, Jul.-Sep. 2011. ilus, tab
Artículo en Inglés | LILACS, BBO | ID: lil-725245
ABSTRACT

Aim:

The aim of this study was to investigate mean electrical activity and how the anterior, middle, and posterior portions of the temporalis muscle work during mastication.

Methods:

The sample consisted of 16 healthy male college freshmen trichotomized, aged between 18 and 25 years, with Angle's Class I and no temporomandibular disorders. Electromyographic (EMG) recordings were made in anterior, middle and posterior portions of the temporalis muscle during mastication for 5 s.

Results:

It was found a significantly lower RMS value in the posterior portion (RMS 1243.92) compared with those of the anterior (RMS 2149.77) and middle (RMS 2531.38) portions.

Conclusions:

There is an association between the portions of the temporalis muscle. It was found a significantly lower RMS value in the posterior portion showing that the anterior and middle portions of the muscle have a predominant function of maintaining movement during mastication.
Asunto(s)


Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Músculo Temporal / Electromiografía / Masticación Límite: Humanos / Masculino Idioma: Inglés Revista: Braz. j. oral sci Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Electromyography Center/BR / University of Campinas/BR / University of São Paulo/BR

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Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Músculo Temporal / Electromiografía / Masticación Límite: Humanos / Masculino Idioma: Inglés Revista: Braz. j. oral sci Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Electromyography Center/BR / University of Campinas/BR / University of São Paulo/BR