Effect of treatment of dentofacial deformities on the electromyographic activity of masticatory muscles.
Int J Oral Maxillofac Surg
; 35(2): 170-3, 2006 Feb.
Article
em En
| MEDLINE
| ID: mdl-16154321
Individuals with dentofacial deformities present changes in masticatory muscles. The objective of the present study was to determine the influence of interdisciplinary treatment in cases of class III dentofacial deformities regarding the EMG activity of the temporal (T) and masseter (M) muscles. The study was conducted on 15 patients with class III dentofacial deformities who were submitted to orthodontic, oromyofunctional and surgical treatment and assigned to groups P1 (before surgery) and P2 (6-9 months after surgery). Fifteen individuals with no alterations in facial morphology or dental occlusion and without signs or symptoms of temporomandibular joint dysfunction were used as controls (CG). The T and M muscles were submitted to EMG bilaterally in the situations of mastication and mastication plus biting, with analysis of amplitude interval and root mean square. For all muscles tested, there was a difference between CG, P1 and P2; CG was higher than P2 and P2 higher than P1 in all situations assessed. We conclude that there was an increase in EMG activity in the T and M muscles after surgical correction of the dentofacial deformity accompanied by interdisciplinary treatment, although the values were still lower than those obtained for CG.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Músculo Temporal
/
Má Oclusão Classe III de Angle
/
Músculo Masseter
Tipo de estudo:
Observational_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Int J Oral Maxillofac Surg
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Dinamarca