Temporomandibular joint dysfunction disorders are dyskinesias caused by impaired mechanical movement of the components of the joint. It is divided into many types. Diagnosis of the typology requires x-rays (temporomandibular joint open and closed position films). Treatment does not require medication. Conservative treatment is used: local heat, eating soft food, small openings, and removal of the cause. One important thing is to remove the cause of the disease. Etiology: 1. mental tension. 2. Most of the back teeth are missing or misaligned; long wisdom teeth are not in the right position. 3. Lateral chewing (eating with one side for a long time). 4. Love to bite hard objects, chewing gum, night grinding, too much speech, etc., can increase the burden on the joints. 5. Poor sitting posture, resulting in muscle dysfunction in the head and neck. 6. Cold, etc.