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Sleep bruxism and associated physiological events in children with obstructive sleep apnea: a polysomnographic study

Carlos F Bonacina1, Leticia M S F A Soster2, Clarissa Bueno2

  • 1Cruzeiro do Sul University, São Paulo, Brazil.

Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine
|December 7, 2023
PubMed

Insights

Children with mild sleep apnea experience physiological changes during sleep bruxism (SB). Leg movements, microarousal, and tachycardia increased during SB events, while bradycardia was higher in control periods.

Area of Science:

  • Pediatric Sleep Medicine
  • Sleep Disorders
  • Physiology

Background:

  • Sleep bruxism (SB) involves mandibular movement activity during sleep.
  • Mild sleep apnea is common in children.
  • Understanding physiological events during SB is crucial.

Purpose of the Study:

  • To evaluate physiological events associated with sleep bruxism (SB).
  • To compare these events with a control window without mandibular activity.
  • To analyze these phenomena in children with mild sleep apnea.

Main Methods:

  • Polysomnography data from children (4-9 years) with mild sleep apnea were analyzed.
  • Mandibular movement activity (SB) was classified as phasic or tonic.
  • Physiological events (arousal, leg movements, heart rate, oxygen saturation, apnea events) were recorded during SB and a 4-minute control window.

Main Results:

  • Increased frequency of leg movements, microarousal, and tachycardia during SB events compared to the control window.
  • Increased bradycardia frequency in the control window compared to SB events.
  • Lower frequency of obstructive and central apnea during SB events.

Conclusions:

  • Significant differences in physiological parameters exist between sleep bruxism and control periods in children with mild sleep apnea.
  • Sleep bruxism is linked to leg movements, tachycardia, and microarousal.
  • The control window effectively represented a non-sympathetic nervous system activation state.
Abstract

Keywords:
obstructive sleep apneapolysomnographyrhythmic masticatory muscle activitysleep bruxism

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