- The cause for TMD is not clear, but dentists believe that symptoms arise from problems with the muscles of the jaw or with the parts of the joint itself. Injury to the jaw, temporomandibular joint, or muscles of the head and neck- such as from a heavy blow or whiplash- can cause TMD. Other possible causes include: grinding or clenching the teeth, which puts a lot of pressure on the joint. Dislocation of the soft cushion or disc between the ball and socket. Presence of arthritis in the TMJ. * STRESS* which can cause a person to tighten facial and jaw muscles or clench the teeth.
Dr. James L. Johnson