Electromyographic analysis of the upper lip in nose and mouth breathers
Braz. j. oral sci
;
5(19): 1203-1208, 2006. tab
Article
in English
| LILACS, BBO
| ID: lil-472288
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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Electromyography
/
Facial Muscles
/
Malocclusion
/
Mouth Breathing
Limits:
Adolescent
/
Child
/
Female
/
Humans
/
Male
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2006
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Pontifical Catholic University of Paraná/BR
/
State University of Campinas/BR
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