TMJ Up to ¾ of Americans may experience at least one sign of a temporomandibular joint problem. Yes, that many! These signs can be anything from soreness of the jaw, popping, clicking, locking of the jaw, or migraine headaches. Does this mean that these symptoms need treatment? No. Experts in the field of Oral and Maxillofacial Surgery from Mass General Hospital affilitated with Harvard School of Dental Medicine in Boston have indicated that only about 5% of patients with sym