Evidence that experimentally induced sleep bruxism is a consequence of transient arousal.
J Dent Res
; 82(4): 284-8, 2003 Apr.
Article
em En
| MEDLINE
| ID: mdl-12651932
ABSTRACT
Spontaneous rhythmic masticatory muscle activity (RMMA) during sleep occurs more frequently following spontaneous transient micro-arousal in patients with sleep bruxism (SB) and normal controls. Here, we tested the hypothesis that an experimental arousal would be followed by an increase in RMMA. We identified RMMA on polygraphic recordings taken before and after sensory stimulation to induce experimental arousal in eight SB patients and eight matched normal subjects. The rate of experimental arousal and the level of resting electromyographic activity in masseter and suprahyoid muscles during sleep did not differ between the groups. In both, muscle tone and heart rate increased during the experimental arousal. Although post-arousal RMMA occurred in all SB patients, it was seen in only one normal subject. Moreover, tooth-grinding occurred during 71% of the evoked RMMA in SB patients. These results support the hypothesis that SB is an exaggerated form of oromotor activity associated with sleep micro-arousal.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bruxismo do Sono
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Dent Res
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Canadá