Craniomandibular pain, oral parafunctions, and psychological stress in a longitudinal case study

summary  In a single case study, the most frequently suggested contributing factors to craniomandibular pain, viz., oral parafunctions and psychological stress, were studied in more detail. During a 13‐week study period, questionnaires were completed, in which, among others, jaw muscle pain, bruxism...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2004-08, Vol.31 (8), p.738-745
Main Authors: van Selms, M. K. A., Lobbezoo, F., Wicks, D. J., Hamburger, H. L., Naeije, M.
Format: Article
Language:English
Subjects:
craniomandibular pain
Dentistry
Electromyography
Facial Pain - physiopathology
Facial Pain - psychology
Female
Humans
Masticatory Muscles - physiopathology
Middle Aged
oral parafunctions
Polysomnography
Regression Analysis
stress
Stress, Psychological - etiology
Stress, Psychological - physiopathology
Temporomandibular Joint Disorders - physiopathology
Temporomandibular Joint Disorders - psychology
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Summary:summary  In a single case study, the most frequently suggested contributing factors to craniomandibular pain, viz., oral parafunctions and psychological stress, were studied in more detail. During a 13‐week study period, questionnaires were completed, in which, among others, jaw muscle pain, bruxism behaviour, and experienced/anticipated stress were noted. During about 40% of the nights, nocturnal masticatory muscle activity (NMMA) was recorded, using single‐channel electromyography (EMG). The number of NMMA events per recorded hour was scored, using a detection threshold of 10% of the maximum voluntary contraction level. This threshold was established in a separate study, in which EMG was compared with polysomnography. Stepwise regression analyses indicated, that morning jaw muscle pain could be explained by evening jaw muscle pain for 64% and by alcohol intake for another 2%. In turn, evening jaw muscle pain was explained by daytime clenching for 56% and by vacuum sucking of the tongue for an additional 6%. Finally, daytime clenching was significantly explained by experienced stress for 30%. Data of the recorded nights showed, that variations in NMMA did not contribute to variations in morning jaw muscle pain. This case study corroborates the paradigm that experienced stress may be related to daytime clenching and, in turn, to evening and morning jaw muscle pain.
ISSN:0305-182X
1365-2842
DOI:10.1111/j.1365-2842.2004.01313.x