Electromyographic analysis of the upper lip in nose and mouth breathers

Authors

  • Michelle Santos Vianna-Lara Dental Branch – Pontifical Catholic University of Paraná, Brazil
  • Paulo Henrique Ferreira Caria Piracicaba Dental School – State University of Campinas - Morphology Department

DOI:

https://doi.org/10.20396/bjos.v5i19.8642947

Keywords:

Electromyography. Facial muscles. Mouth breathing. Malocclusion

Abstract

The purpose of this research was to compare the electromyographic (EMG) activity of the superior belly of orbicularis oris muscle between individuals with Class II Division 1 malocclusion, nose breathers (Group 1) and mouth breathers (Group 2), having as a comparative parameter a control group of individuals with clinically normal occlusion (Group 3). The EMG recordings were obtained in resting position and in 16 movements. A statistically significant difference between Groups 1 and 2 was observed during puffing out with flaccid cheeks, dispelling of the lips’ angle and saliva deglutition; between Groups 1 and 3 during puffing out with flaccid cheeks, posterior right and left clenching and saliva deglutition; between 2 and 3 during posterior right and left clenching. According to the normalized data the malocclusion groups (Groups 1 and 2) have a similar muscle behavior but when they are compared with the normal occlusion group there was a statistically significant difference between them. It can be concluded that, for this sample, the breathing mode did not influence the muscular behavior of the subjects with Class II division 1 malocclusion and that subjects with normal occlusion have more competent lips than the ones with Class II division 1 malocclusion.

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Author Biographies

Michelle Santos Vianna-Lara, Dental Branch – Pontifical Catholic University of Paraná, Brazil

Possui graduação em Odontologia pela Pontifícia Universidade Católica do Paraná (1999), mestrado em Odontologia Área de Concentração em Ortodontia pela PUCPR (2002) e doutorado em Biologia Patologia Buco-Dental, Área de Concentração em Anatomia pela FOP-UNICAMP (2007).

Paulo Henrique Ferreira Caria, Piracicaba Dental School – State University of Campinas - Morphology Department

Graduação em Odontologia - FOL (1996), mestrado em Biologia Celular e Estrutural -UNICAMP (1999), Doutorado em Biologia Patologia Buco-Dental - UNICAMP (2001), Pós-doutorado em Biomecânica do Crânio - University of Washington UW - (2008).

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Published

2016-01-19

How to Cite

1.
Vianna-Lara MS, Caria PHF. Electromyographic analysis of the upper lip in nose and mouth breathers. Braz. J. Oral Sci. [Internet]. 2016 Jan. 19 [cited 2023 Feb. 2];5(19):1203-8. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642947

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