What is TMJ vs TMD?

The temporomandibular joint is located at the base of the skull. Commonly referred to as the TMJ, it allows for the movement required for chewing and talking. The joint connects the mandible, which is the lower jaw, and the temporal bone, which is on the side of the skull.

Since the TMJ allows for movement both up and down as well as from side to side, it is one of the most complex joints in the body. This can make severe TMJ disorders difficult to treat effectively. TMD stands for Temporomandibular Joint Disorder. It is a dysfunction of the TMJ.