The two major symptoms of this disease are pain and dysfunction. In some cases there is actually a clicking or popping sound when the jaw is moved. Some of the most common causes are over usage of the jaw muscles. They could be as simple as chewing gum, clenching muscles, fingernail and pencil biting and grinding of the teeth. Most cases however are not so easy to diagnose. The joint in the jaw is one of the most complex joints in the body. It is more susceptible to common use, causing wear of both the bone and cartilage.




NEBOSH