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- Title
Females with Sleep Bruxism Show Lower Theta and Alpha Electroencephalographic Activity Irrespective of Transient Morning Masticatory Muscle Pain.
- Authors
Susumu Abe; Carra, Maria Clotilde; Huynh, Nelly T.; Rompré, Pierre H.; Lavigne, Gilles J.
- Abstract
Aims: To investigate the hypothesis that the presence of transient morning masticatory muscle pain in young, healthy sleep bruxers (SBr) is associated with sex-related differences in sleep electroencephalographic (EEG) activity. Methods: Data on morning masticatory muscle pain and sleep variables were obtained from visual analog scales and a second night of polysomnographic recordings. Nineteen normal control (CTRL) subjects were age- and sex-matched to 62 tooth-grinding SBr. Differences in sleep macrostructure (stage distribution and duration, number of sleep-stage shifts), number of rhythmic masticatory muscle activity (RMMA) events/ hour, and EEG activity were analyzed blind to subject status. The influence of pain and gender in SBr and CTRL subjects was assessed with the Fisher's exact test, Mann-Whitney U test, two-sample t test, and analysis of variance (ANOVA). Results: Low-intensity morning transient orofacial pain was reported by 71% of SBr, with no sex difference. RMMA event frequency was higher in SB than CTRL subjects (4.5/hour vs 1.3/hour; P < .001). SBr had fewer sleep-stage shifts, irrespective of sex or pain status. Female SBr had significantly lower theta and alpha EEG activity compared to female CTRL subjects (P = .03), irrespective of pain. Conclusion: Female SBr had lower theta and alpha EEG activity irrespective of transient morning pain.
- Subjects
STATISTICS methodology; ANALYSIS of variance; BRUXISM; CHI-squared test; ELECTROENCEPHALOGRAPHY; EPIDEMIOLOGY; FISHER exact test; STATISTICS; T-test (Statistics); U-statistics; DATA analysis; INTER-observer reliability; CASE-control method; DATA analysis software; DESCRIPTIVE statistics; DISEASE complications
- Publication
Journal of Orofacial Pain, 2013, Vol 27, Issue 2, p123
- ISSN
1064-6655
- Publication type
Article
- DOI
10.11607/jop.999