Masticatory muscle sleep background electromyographic activity is elevated in myofascial temporomandibular disorder patients

Summary Despite theoretical speculation and strong clinical belief, recent research using laboratory polysomnographic (PSG) recording has provided new evidence that frequency of sleep bruxism (SB) masseter muscle events, including grinding or clenching of the teeth during sleep, is not increased for...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2013-12, Vol.40 (12), p.883-891
Main Authors: Raphael, K. G., Janal, M. N., Sirois, D. A., Dubrovsky, B., Wigren, P. E., Klausner, J. J., Krieger, A. C., Lavigne, G. J.
Format: Article
Language:English
Subjects:
bruxism
Case-Control Studies
Dentistry
Electromyography
EMG
Facial Pain - etiology
Facial Pain - physiopathology
Female
Humans
Masticatory Muscles - physiopathology
Middle Aged
Monitoring, Physiologic
Muscle Contraction
muscle tone
myofascial pain
Pain Measurement
polysomnography
Self Report
Signal Processing, Computer-Assisted
sleep
sleep bruxism
Sleep Bruxism - complications
Sleep Bruxism - physiopathology
Sleep, REM
temporomandibular disorders
Temporomandibular Joint Disorders - complications
Temporomandibular Joint Disorders - physiopathology
Time Factors
TMD
Wakefulness
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Summary:Summary Despite theoretical speculation and strong clinical belief, recent research using laboratory polysomnographic (PSG) recording has provided new evidence that frequency of sleep bruxism (SB) masseter muscle events, including grinding or clenching of the teeth during sleep, is not increased for women with chronic myofascial temporomandibular disorder (TMD). The current case–control study compares a large sample of women suffering from chronic myofascial TMD (n = 124) with a demographically matched control group without TMD (n = 46) on sleep background electromyography (EMG) during a laboratory PSG study. Background EMG activity was measured as EMG root mean square (RMS) from the right masseter muscle after lights out. Sleep background EMG activity was defined as EMG RMS remaining after activity attributable to SB, other orofacial activity, other oromotor activity and movement artefacts were removed. Results indicated that median background EMG during these non‐SB event periods was significantly higher (P 
ISSN:0305-182X
1365-2842
DOI:10.1111/joor.12112