MAGNETIC-RESONANCE-IMAGING FINDINGS IN ASYMPTOMATIC VOLUNTEERS AND SYMPTOMATIC PATIENTS WITH TEMPOROMANDIBULAR DISORDERS

Internal derangement has been suggested to be a cause of temporomandib ular disorders, This study compared magnetic resonance imaging finding s in 82 asymptomatic volunteers and 263 symptomatic patients, Disk dis placement was observed in 33% of the asymptomatic volunteers and 84% o f the symptomatic patients. The prevalence of trauma, headache, and ot her joint problems was more common in symptomatic patients, A history of general anesthesia and orthodontic treatment was not increased in t he symptomatic population compared with asymptomatic volunteers. This study suggests that disk displacement is more common in symptomatic su bjects.