Association between the severity of possible sleep bruxism and possible awake bruxism and attrition tooth wear facets in children and adolescents.

Objective: To evaluate the association between the severity of possible sleep bruxism (PSB) and possible awake bruxism (PAB) and attrition tooth wear facets (ATWF) in children/adolescents.
Methods: Four hundred-thirty-four children/adolescents enrolled in schools in Lavras, Brazil, participated in this cross-sectional study. Caregivers answered a questionnaire about their childrens' PSB. Children/adolescents answered a questionnaire about the occurrence of PAB.
Results: ATWF among individuals without PSB and PAB was lower than those with moderate/severe PSB ( p = 0.038) and moderate/severe PAB ( p = 0.003). ATWF in anterior teeth was lower among individuals without PSB compared to those with mild ( p = 0.015) and moderate/severe PSB ( p = 0.032). ATWF in posterior teeth was lower among individuals without PAB compared to those with mild ( p = 0.046) and moderate/severe PAB ( p = 0.017).
Conclusion: The number of attrition tooth wear facets is proportional to the severity of PSB and PAB.