Effect of contingent electrical stimulation on masticatory muscle activity and pain in patients with a myofascial temporomandibular disorder and sleep bruxism.
J Orofac Pain
; 27(1): 21-31, 2013.
Article
em En
| MEDLINE
| ID: mdl-23424717
ABSTRACT
AIMS:
To determine whether an intervention reduces oromotor activity and masticatory muscle pain in myofascial temporomandibular disorder (M/TMD) patients with high levels of masticatory muscle activity associated with sleep bruxism.METHODS:
Fourteen women with M/TMD and prior polysomnographic evidence consistent with sleep bruxism participated in a 10-week single-group pre-test/ post-test mechanistic clinical trial. A 2-week period of baseline monitoring of individually biocalibrated electromyographic (EMG) events associated with sleep bruxism was followed by 6 weeks of EMG-event-contingent treatment via an innocuous electrical pulse to the skin overlying the temporalis muscle. Treatment was discontinued during 2-week follow-up monitoring. Each night before sleep, subjects recorded their average daily pain.RESULTS:
Mixed-model analysis of variance showed a reliable reduction of EMG events during contingent stimulation treatment periods, but frequency of EMG events returned to baseline levels during follow-up (linear term, P = .002; quadratic term, P = .001). In contrast, nightly pain reports failed to show any systematic changes during treatment (linear and quadratic trends, both P > .10).CONCLUSION:
Spontaneous pain severity and nighttime oromotor activity vary independently over nights, even in M/TMD patients selected for relatively high levels of both characteristics.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Músculo Temporal
/
Dor Facial
/
Síndrome da Disfunção da Articulação Temporomandibular
/
Terapia por Estimulação Elétrica
/
Bruxismo do Sono
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
Idioma:
En
Revista:
J Orofac Pain
Assunto da revista:
NEUROLOGIA
/
ODONTOLOGIA
/
PSICOFISIOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Estados Unidos