Dentofacial functional abnormalities

**Definition:** Temporomandibular joint disorder (TMJ) is the name given to a group of symptoms that cause pain in the head, face, and jaw. The symptoms include headaches, soreness in the chewing muscles, and clicking or stiffness of the joints. They often have psychological as well as physical causes.

**Inclusions:** - Abnormal jaw closure

**Exclusions:** - bruxism - teeth-grinding NOS - teeth clenching