ORIGINAL ARTICLE Psychosocial aspects of temporomandibular disorders and oral

Objective.Theaimof the studywas to evaluate the associationbetweenpsychosocial aspects of temporomandibular disorders (TMD) andoral health-relatedquality-of-life (OHRQoL) and, secondly, to investigate the genderdifferences in these associationsusingpatient and non-patient groups.Materials andmethods.The sample of the study consisted of 79 patients with TMDand 70 non-patients. ThedatawascollectedbyFinnishversionsof theRDC/TMDAxis IIprofile andOralHealth ImpactProfile (OHIP-14)questionnaires. The associations between Axis II profile sub-scales and OHIP prevalence were evaluated using chi-square tests, as stratified by group status (TMD patients and non-patient controls) and by gender. The association between OHIP prevalence and Axis II profile sub-scaleswereevaluatedusing logisticregressionanalysis, adjustedbyage,genderandgroup.Results.OHIPprevalence(thosereportingat least one problem)was 90.9 % in the patient group and 33.3 % in the non-patient group (p < 0.001, chi-squared test).OHIPprevalence washigher among those scoringhigheronallRDC/TMDAxis IIprofile sub-scales, i.e. gradedchronicpain status,depressionandnon-specific physical symptoms with pain items included and with pain items excluded. The associations were significant in the non-patient group.Women showed statistically significant associations of OHIP prevalence with all Axis II sub-scales. Amongmen,OHIP prevalence associated with GCPS and somatization. The logistic regression analysis showed that OHIP prevalence associated significantly with somatization and depression. Conclusions. TMD associate with OHRQoL through multiple ways, linked with depression and somatization. These findings emphasize the importance of early and effective treatment of TMD