The temporomandibular joint (TMJ) disorder’s (TMJD) role in the causation of headaches and migraines is a real concern to modern holistic dentistry. Dr. Leon Treger, Toronto holistic dentist, believes that Maxillofacial Orthopedic intraoral appliances are very effective in the treatment of headaches and migraines in certain cases. Neck and shoulder pain cases, as well, may be related to TMJD. Tinnitus (ringing in the ears) and tingling in the fingers and arms can be connected to TMJ disorder. Grinding of teeth i.e. parafunction is the major cause of the above.