Orofacial pain includes a number of clinical problems involving the chewing (masticatory) muscles or temporomandibular joint. Problems can include temporomandibular joint discomfort; muscle spasms in the head, neck and jaw; migraines, cluster or frequent headaches; or pain with the teeth, face or jaw.
You swallow approximately 2,000 times per day, which causes the upper and lower teeth to come together and push against the skull. People who have an unstable bite, missing teeth or poorly aligned teeth can have trouble because the muscles work harder to bring the teeth together, causing strain. Pain also can be caused by clenching or grinding teeth, trauma to the head and neck or poor ergonomics.
Some people may experience pain in the ears, eyes, sinuses, cheeks or side of the head, while others experience clicking when moving the jaw or even locking if the jaw is opened or closed.