| History: The most common complaints are jaw pain close to the ears and difficulty with jaw movement. The character of the pain may vary from dull to sharp, and may be constant or occasional. Clicking noises in the joint may be heard. A ringing sensation in the ears (tinnitus), as well as hearing problems may be present. Individuals may also complain of earache, headache, or dizziness. A history of dental work, facial trauma, or psychological stress (resulting in nocturnal teeth grinding) may be reported. The individual should be asked about frequent gum-chewing. Physical exam: An exam may reveal tenderness in the jaw joint and/or related chewing muscles along with lack of mobility. Limitation in jaw movement when opening the mouth or a history of locking open or closed may be apparent. Range of opening is typically around 40 millimeters from edge of upper and lower teeth while at maximum opening. Limited opening is evident at 25 millimeters and below. Jaw deviation while opening is a sign of internal joint derangement. Poor dental alignment or missing teeth may be obvious as well. Unusual sounds such as popping or clicking or grinding may be noted in the jaw joint. There may be evidence of hearing problems. Records of recent dental procedures may be reviewed. Tests: Laboratory or imaging studies are generally not necessary unless an infection or fracture are suspected. |
Source: Medical Disability Advisor