Temporo mandibular joint is located in front of the ear and are responsible for the opening of the mouth. Problems like pain;clicking;trismus are frequent in the TMJs. Clinical examination and image exams(usually magnetic resonance) are necessary to determine the cause of the problem and the treatment. Sometimes it is a chronic problem that will take time to overcome. Surgery is indicated in selected cases. Anesthesia is general, hospitalization of one day and one hour of surgery. There is no need to lock the mandible, normal movement of the mandible is restored after 30 days.