Hello, generally, the treatment of upper and lower teeth dislocation depends on what causes the tooth dislocation. Common reasons are as follows: 1. Long-term unilateral chewing, especially long-term unilateral chewing during jaw development, will lead to jaw deformity and dislocation of upper and lower teeth. It is necessary to correct the bad habit of unilateral chewing by alternating chewing on both sides, and correct it in the stomatology department of a regular hospital or the orthodontics department of a big hospital; Second, temporomandibular joint disorder, dislocation of articular disc in temporomandibular joint may cause dislocation of upper and lower teeth. It is necessary to take open and closed photos of temporomandibular joint to see if there is dislocation of articular disc, and it is suggested to remove the cause and treat it conservatively. Third, the joint area trauma, dislocation caused by trauma needs orthodontic treatment, and slowly return the joint head to the correct position.