hello user, i understand your concern - one possibility is of "bruxism" - teeth grinding during sleep , that can be confirmed by visiting a dentist who may perform oral examination and may order dental x rays to see any dental damage due to grinding and may prescribe a mouth guard - meanwhile relaxation exercises like deep breathing , yoga can be helpful as they reduce stress ( one postulated cause of bruxism) , avoidance of alcohol and caffeine can also help . hope i answered your query - further queries are welcome - if satisfied rplease rate the answer