Abstract
The patient, a 73-year-old man, was referred for reposition of his cross bite, because of temporomandibular joint dislocation. The induced dislocation was supposed to be due to abnormal resorption of the condylar head, obsolete fractures of the mandible and the malar bone in childhood, and also application of the unsuitable full dentures in the maxilla and mandible over ten years ago. The treatment was carried out by restricting operation for anterior movement of the condyle through amputation of the zygomatic arch and pushing downward. The patient has recovered with good relation of occlusion and is comfortable with the result of the operation.