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Sleep movements in teethgrinders.

T T Sjöholm1, O J Polo, J M Alihanka

  • 1University of Turku, Finland.

Journal of Craniomandibular Disorders : Facial & Oral Pain
|January 1, 1992
PubMed
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Nocturnal teeth grinding (bruxism) is linked to increased body movements during sleep. This study found bruxism patients exhibit more frequent and longer body movements, suggesting a broader motor disturbance beyond the jaw muscles.

Area of Science:

  • Neurology
  • Sleep Medicine
  • Biomedical Engineering

Background:

  • Nocturnal teeth grinding, or bruxism, is a common condition.
  • Its association with general motor activity during sleep requires further investigation.

Purpose of the Study:

  • To explore the relationship between nocturnal teeth grinding and overall body movement during sleep.
  • To determine if teeth grinding is associated with increased general motor activity.

Main Methods:

  • Utilized masseter muscle electromyogram (EMG) and a static charge-sensitive bed movement sensor.
  • Recorded sleep activity in 12 patients with teeth grinding and 12 healthy controls.

Main Results:

  • Teeth grinders showed significantly higher frequency (21.4/hr vs 14.0/hr) and duration (87.4s/hr vs 55.2s/hr) of body movements.

Related Experiment Videos

  • Increased body movements were particularly associated with EMG elevations in early sleep stages.
  • No significant difference in isolated EMG elevations between groups.

    • Conclusions:

    • Nocturnal teeth grinding is associated with increased general body movement activity during sleep.
    • The motor disturbance of bruxism extends beyond the masticatory muscles.
    • This suggests a potential link between sleep disturbances and broader motor control issues.