Branch of dentistry concerned with the management of the Temporomandibular Joint which may include orthotics or appliances, and may be in conjunction with orthodontic treatment.

A TMJ (temporomandibular joint) appliance may relieve pain, discomfort and stiffness in the area where the upper and lower jaw connect, just in front of the ears. Though temporomandibular disorders (TMD) may improve without dental or medical treatment, dentists sometimes prescribe a TMJ appliance to reduce clenching or grinding the teeth, which may worsen TMD symptoms.