Jaw or TMJ Splint Therapy helps protect your temporomandibular joint in many ways. This joint has a unique mechanism; an articular disk separates the articular surfaces of the bones. If the functional anatomy of your temporomandibular joint needs support, splint therapy can help. Dentists who offer splint therapy are trained in TMJ anatomy for: Relaxing your jaws' joints and muscles to assist in releasing tension in your head, neck, and jaw. Aiding in the recovery of your fascia from the stress of jaw reflexes, such as teeth clenching. Helping prevent further bruxism. Helping to protect your teeth from additional wear.