Anatomy of the jaw
The temporomandibular joint is the joint that attaches the skull to the mandible. It is a complex and unique joint which generates a so-called paired movement. This means that the left-hand and right-hand jaw joint have to move at the same time. The upper jaw on the other hand cannot move because it is attached to the skull.
Complaints of the jaw are often a collective term for complaints which can be tracked back to the temporomandibular joint, the jaw and related structures. This is also called temperomandibular dysfunction. Usually these complaints occur by straining the muscles of mastication.