Trismus is a condition in which one of the jaw muscles tightens or spasms, holding the mouth shut. A person with trismus has problems talking, eating, and brushing his or her teeth.
Trismus can result from injury, problems with the joint, surgery, radiation treatment, or sometimes problems with clenching or tightening the jaw.
Treatment depends on the cause of the problem but often includes oral devices and exercises.
Primary Medical ReviewerAdam Husney, MD - Family Medicine
Specialist Medical ReviewerArden Christen, DDS, MSD, MA, FACD - Dentistry
Current as ofNovember 14, 2014
WebMD Medical Reference from Healthwise