Abstract

Several possible causes for the temporomandibular joint disorders have been proposed, but trauma to the jaw in- cluding macro and micro-trauma is the most common etiologic factor contributing to a change in biomechanics in the joint. Facial asymmetry is a factor of the force imbalance to the temporomandibular joint which can cause the temporomandiular joint disorders. It can be corrected by orthognatic surgery (2-jaw surgery) with orthodontic therapy to be a harmonic bite force transmission to the temporomandibular joint. And nonfunctional chewing force can be managed with a biofeedback device which is one of the behavior therapies. Biofeedback is a well- proved treatment method in rehabilitation therapy. In the temporomandibular joint disorders field, it can alert patients to their bruxing habits in real time and manage to stop the bruxism with stimulation to the patients. In this paper, we report on the 3 cases to discuss about the force management of the temporomandibular joint involved with facial asymmetry and sleep bruxism. (J Korean Dent Assoc 2025; 63(6): 197-206)