Tinnitus in Temporomandibular Disorders: Axis I and Axis II Findings According to the Diagnostic Criteria for Temporomandibular Disorders.

To examine the associations of self-reported presence of tinnitus with subtypes of temporomandibular disorders (TMD) as assessed by Axis I of the Diagnostic Criteria for TMD (DC/TMD) and with psychologic characteristics as assessed by Axis II. This retrospective controlled study included 108 consecutive TMD patients referred to the Tel Aviv University Orofacial Pain Clinic. Each patient received full Axis I and Axis II diagnoses according to the DC/TMD. The patients were asked about currently experiencing tinnitus. Pearson chi-square test and Fisher exact test were used to test the associations between categorical variables. Mann-Whitney test was used to assess differences in continuous variables between categories. A P value < .05 was considered statistically significant. Thirty-three (30.6%) TMD patients reported experiencing tinnitus. There was a significantly higher prevalence of myofascial pain with referral (P = .008) and nonspecific physical symptoms (P = .014) among the TMD patients who reported tinnitus. In addition, those patients reported significantly longer pain duration compared to TMD patients without tinnitus (P = .039). This study emphasizes the necessity of assessing both Axes I and II according to the DC/TMD in future studies and supports creating a standardized tinnitus screener tailored to TMD patients for future studies on tinnitus in TMD patients.