People refer to TMJ or TMD when they have pain in their jaw. Sometimes people who grind their teeth can develop a serious problem with their jaw, which left untreated, can adversely affect the teeth, gums and bone structures of the mouth. One of the most common jaw disorders is related to a problem with the temporomandibular joint, connecting your lower jaw to your skull. This joint allows your upper and lower jaw to open and close and facilitates chewing and speaking.
Many times people with temporomandibular joint disorders (TMD) have a clicking or popping sound when opening and closing their mouths, and may experience headaches, neck aches, and tooth sensitivity. TMD can be treated using muscle relaxants, aspirin, biofeedback, or wearing a small plastic appliance in the mouth during sleep.
Some discomfort or jaw pain may be experienced with minor cases of TMD, however more serious conditions involve improperly aligned joints or dislocated jaws. The most extreme form of TMD involves an arthritic condition of the jaw joint.