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The temporomandibular joint connects the lower jaw to the temporal bone of the skull and is responsible for bringing the lower and upper jaws together. It is one of the most frequently used joints in the body. Depending on the underlying cause, jaw pain can occur suddenly or build up over time.
The massater connects your jaw to your cheek bone and is the prime mover of jaw closure. You can feel this muscle contract when you place your hand on your jaw and clench your teeth.