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Correlations between sleep architecture and sleep-related masseter muscle activity in children with sleep bruxism

Claudia Restrepo1, Frank Lobbezoo2, Eduardo Castrillon3

  • 1Universidad CES, Medellín, Colombia.

Journal of Oral Rehabilitation
|February 15, 2023
PubMed

Insights

Pediatric sleep bruxism is linked to disrupted sleep patterns. Shorter sleep duration and more microarousals during sleep predict sleep bruxism in children.

Area of Science:

  • Pediatric Sleep Medicine
  • Neurology
  • Sleep Disorders

Background:

  • Sleep bruxism (SB) during non-REM (nREM) sleep and increased microarousals are documented in adults.
  • These associations have not been previously established in pediatric populations.

Purpose of the Study:

  • To investigate the relationship between sleep architecture and masseter muscle activity (MMA) associated with sleep bruxism in children.
  • To identify specific sleep parameters that correlate with SB/MMA in pediatric subjects.

Main Methods:

  • A polysomnographic (PSG) study was conducted on 43 children (aged 7-12 years) with confirmed SB.
  • Sleep architecture data (TSD, SE, SOL, REM/nREM duration, microarousals) and SB/MMA episodes were recorded over two nights.
  • Linear regression analyses were used to assess correlations between sleep architecture and SB/MMA.

Main Results:

  • Multiple regression analysis revealed that shorter total sleep duration (TSD), reduced REM and nREM stage 1 sleep, longer sleep onset latency (SOL), and increased microarousals per hour during both REM and nREM sleep were significant predictors of SB/MMA.
  • These factors explained 51.1% of the variance in SB/MMA (R² = 0.511).

Conclusions:

  • Sleep bruxism in children is associated with alterations in sleep architecture, including reduced total sleep time, shorter REM and nREM sleep stages, and a higher frequency of microarousals.
  • Further research is required to elucidate the clinical implications of these findings in pediatric sleep bruxism.
Abstract

Keywords:
childrenpolysomnographysleep architecturesleep bruxism

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