4.6 Review

Sleep bruxism and obstructive sleep apnea: association, causality or spurious finding? A scoping review

Journal

SLEEP
Volume 45, Issue 7, Pages -

Publisher

OXFORD UNIV PRESS INC
DOI: 10.1093/sleep/zsac073

Keywords

sleep bruxism; obstructive sleep apnea; scoping review; association; prevalence

Funding

  1. Coordination for the Improvement of Higher Education Personnel (CAPES), Ministry of Education (Brazil)

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This study aims to evaluate the available evidence on the relationship between sleep bruxism (SB) and obstructive sleep apnea (OSA) in adults and children. The results show that there is no significant association between OSA and SB in adults, but there may be a possible association in children. Standardized methodologies for identifying SB should be consistently used in both populations before reaching any conclusion regarding such association.
Study Objectives To evaluate the available evidence on the putative relationships between sleep bruxism (SB) and, obstructive sleep apnea (OSA) to assess the extent of research on this topic, and to formulate suggestions for future research. Methods A scoping review including studies examining temporal and overall association and prevalence of SB and OSA was performed. Six main databases and gray literature were searched. The studies selection was conducted by three independent reviewers. A narrative synthesis of the results was carried out. Results Thirteen studies in adults and eight studies in children were finally included. The median of concomitant conditions prevalence was 39.3% in adults and 26.1% in children. Marked methodological variability was identified among studies in adults and even more when we compared detection methods in children. No significant association between OSA and SB emerged in most studies in adults, while an association may be possible in children. Conclusions Based on the current literature, it is not possible to confirm that there is a relationship between SB and OSA in adults. In patients under pediatric care, although this association seems plausible, there is currently insufficient supportive evidence. Standardized validated methodologies for identifying SB should be consistently used in both populations before reaching any conclusion regarding such association. Furthermore, assessment of shared phenotypes between patients with SB and patients with OSA may reveal new insights that will contribute to personalized approaches aiming to optimize the management of such comorbidities.

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