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Prevalence of sleep bruxism and associated factors in preschool children

Raquel G Vieira-Andrade1, Clarissa L Drumond2, Paulo A Martins-Júnior3

  • 1Doctoral student, Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.

Pediatric Dentistry
|April 11, 2014
PubMed

Insights

Sleep bruxism affects about 14% of preschoolers. Key factors include dental crowding, object biting, and prolonged bottle or breast-feeding habits.

Area of Science:

  • Pediatric Dentistry
  • Sleep Medicine
  • Epidemiology

Background:

  • Sleep bruxism, characterized by teeth grinding or clenching during sleep, is a common condition in children.
  • Understanding its prevalence and associated factors in early childhood is crucial for timely intervention.

Purpose of the Study:

  • To determine the prevalence of sleep bruxism in preschool children aged three to five years.
  • To identify factors associated with sleep bruxism in this age group.

Main Methods:

  • A cross-sectional study involving 749 preschool children was conducted.
  • Data were collected through oral clinical examinations, anthropometric measurements, and interviews.
  • Statistical analysis included chi-square tests and Poisson regression.

Main Results:

  • The prevalence of sleep bruxism was found to be approximately 14%.
  • Significant associations were observed between sleep bruxism and lower dental crowding (PR=3.38), habit of biting objects (PR=2.49), prolonged breastfeeding (>12 months, PR=1.98), and prolonged bottle-feeding (>24 months, PR=1.93).

Conclusions:

  • Lower arch crowding, object biting habits, and extended durations of breast and bottle-feeding are associated with sleep bruxism in preschoolers.
  • These findings highlight potential risk factors that may inform preventive strategies.
Abstract

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