Fig. 1

Flow chart of study groups. *Excluded from the study were 56 patients who did not complete the DC/TMD questionnaire, 67 patients who were younger than 18 years, 142 patients who received other orofacial pain diagnoses that included systemic diseases (e.g., fibromyalgia and inflammatory arthritis), and 38 patients who did not meet the DC/TMD criteria for diagnosis of TMD