Radiographical Findings in Patients with Temporomandibular Joint Clicking Compared with Control Group by Cone Beam Computed Tomography (CBCT)

Study the radiographical finding of temporomandibular joint in patients with clicking by using cone beam computed tomography (CBCT) and determination of osteoarthritic changes and compared with control group. The study sample consisted of seventy eight patients with disk displacement and thirty one as control subjects. Patients with temporomandibular joint internal derangement were divided into four groups according to the Diagnostic Criteria for Temporomandibular Disorders (Group1-disk displacement with reduction. Group2-disk displacement with reduction with intermittent locking. Group3-disk displacement without reduction with limited opening. Group 4-disk displacement without reduction without limited opening). The most frequent radiographical findings in patients with internal derangement was erosion(41.02%) then followed by flattening (30.41%), osteophyte (17.3%), pseudo cyst(12.8%), and finally sclerosis (9.61%). Erosion and flattening are the most prevalent types of degenerative bone changes in patients with internal derangement.