The aim of this study was to evaluate the association between respiratory disorders and sleep bruxism, with an evaluation of demographic/socioeconomic factors and childhood stress as confounding variables.
A cross-sectional study was performed in the city of Diamantina, Brazil, with 448 randomly selected schoolchildren aged 8 to 11 years. The schoolchildren underwent an oral examination for the evaluation of bruxism. Parents/caregivers answered a questionnaire for the assessment of sleep bruxism; socioeconomic-demographic factors; and respiratory disorders, such as rhinitis, sinusitis, and bronchitis. The schoolchildren filled out the Children’s Stress Scale. Poisson regression models were constructed separately for each respiratory disorder to determine prevalence ratios (PRs) and 95% confidence intervals (CIs).
Sleep bruxism was more prevalent among children with rhinitis (PR = 1.45; 95%CI 1.08–1.93; p = 0.012) and sinusitis (PR = 1.58; 95%CI 1.06–2.36; p = 0.023). No significant association was found between sleep bruxism and bronchitis. A greater frequency of sleep bruxism was found among children whose mothers had a higher level of schooling and those who reported stress in the resistance/exhaustion phase.
Rhinitis and sinusitis were associated with sleep bruxism. Moreover, sleep bruxism was more prevalent among children whose mothers had a higher level of schooling and those with higher degrees of stress.
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The authors appreciate the support of the Brazilian Coordination of Higher Education (CAPES), the Research Foundation of the State of Minas Gerais (FAPEMIG), and the National Council for Scientific and Technological Development (CNPQ), Brazil.
No funding was received for this research.
Conflict of interest
The authors declare that they have no conflicts of interest.
The present study received approval from the Human Research Ethics Committee of the Universidade Federal dos Vales do Jequitinhonha and Mucuri (Brazil) under process number 370.291.
All legal guardians received clarifications regarding the objectives and procedures of the study. Those who agreed to their child’s participation signed a statement of informed consent.
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Drumond, C.L., Souza, D.S., Serra-Negra, J.M. et al. Respiratory disorders and the prevalence of sleep bruxism among schoolchildren aged 8 to 11 years. Sleep Breath 21, 203–208 (2017). https://doi.org/10.1007/s11325-017-1466-9
- Sleep bruxism
- Respiration disorders
- School children