Study of the relationship of psychosocial disorders to bruxism in adolescents

E Katayoun, F Sima, V Naser, D Anahita
Journal of the Indian Society of Pedodontics and Preventive Dentistry 2008, 26 Suppl 3: S91-7

BACKGROUND AND AIM: Bruxism has been defined as a diurnal or nocturnal parafunctional habit. Etiology of bruxism has remained controversial and some investigators believe that psychological factors may play a major role in promoting and perpetuating this habit. The aim of this case-control study was to assess the existence of an association between bruxism and psychosocial disorders in adolescents., Participants were chosen among 114, 12-14 year old students (girls). They were divided into two groups, bruxers and nonbruxers, on the basis of both validated clinical criteria and interview with each patient. A few participants were excluded on the basis of presence of systemic disorders, TMJ disorders, other oral habits, primary teeth, defective restorations and premature contacts. Following matching of two groups in regard to parent's age and education, mother's marital status, child support status, mother's employment status, and socio-economical status, 25 cases and 25 controls were enlisted. A self report validated questionnaire (YSR, 11-18 yr) was then filled out by both groups for the evaluation of 12 psychosocial symptoms.

RESULTS: Remarkable differences in certain psychosocial aspects were found between the two groups. Prevalence of psychosocial disorders including Thought Disorders (P < 0.005), Conduct Disorders (P < 0.05), Antisocial Disorders (P < 0.06) as identified by YSR was significantly higher in bruxers. Significant differences between the two groups also emerged in total YSR scores (P < 0.005). The results of Odds Ratio revealed that a bruxer adolescent has 16 times greater probability for psychosocial disorders than a non-bruxer one. Fischer exact test and T-test were used and Odds Ratio and Confidence Interval was estimated.

CONCLUSION: Support to the existence of an association between bruxism and psychosocial disorders has been provided.

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