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What Causes TMJ Disorder?
A good understanding of what causes TMJ Disorder begins with a basic knowledge of how the TM joints work. Both joints consist of a "ball", known as the condyle, located on the lower jaw (mandible) and the "socket" or fossa on each side of the skull. In between the two bone surfaces a "disc" acts as a shock absorber to allow a smooth, gliding action for the joint. The disc is held in place against the back of the joint by ligaments and connective tissue containing blood vessels and nerves. Muscle groups attach directly to the jawbones to align, stabilize and control jaw movement.
A TMJ Disorder may develop for any number of reasons:lost or crooked teethoverbiteteeth that fit together poorly (malocclusion)degenerative arthritisvarious head or neck injuries including whiplashstress causing clenched teeth (bruxism) and muscle spasms
Any of these conditions can result in a misalignment or displacement of the jaw which places stress on the nerves, blood vessels, muscles and connecting tissues of the TM joints. When the condition is prolonged, your body may begin to compensate by adapting an unnatural position involving the muscles of the neck, back or even the arms and pelvis. |
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