The Prevalence of Temporomandibular Disorders in Fibromyalgia Patients Compared to That of Failed Back Syndrome Patients: A Blinded Prospective Study.

The purpose of this study was to determine the prevalence of temporomandibular disorders (TMD) in fibromyalgia (FM) patients compared to failed back syndrome (FBS) patients. In addition, the FM and FBS patients were assessed and compared with regard to their psychosocial dysfunction. The study included 51 adult patients (FM = 32, FBS = 19) recruited from a physical medicine and rehabilitation clinic and a FM workshop. Questionnaires included an orofacial pain questionnaire and a battery of psychological questionnaires that included the Symptom Check List-90-Revised, the Pittsburgh Sleep Quality Index, the Multi-dimensional Pain Inventory, the Post-traumatic Stress Disorde