Temporomandibular disorder (TMJ, TMJD or TMD) affects the temporomandibular joint, an area that includes the hinge jaw joint (the bridge for the lower jaw or mandible) and the temporal bone of the skull located in front of each ear, the muscles surrounding the jaw and the jaw itself.
This area of the face contributes to chewing, bite (occlusion) and jaw movement. Therefore, TMJ disorder compromises jaw flexibility and may cause pain at rest or during common movements such as talking, chewing and yawning.
The pain and discomfort caused by TMJ disorder may be severe, can be either intermittent or constant and may last for many years.
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