TMJ stands for the temporomandibular joint, which describes the two joints near the front of your ears where the upper and lower jaws connect. Damage occurs to the TMJ when the disc in the joint, the cushioning cartilage, slips out of position.
This will often cause pain, jaw locking or a clicking/grating noise when you open and close your mouth. It may even change the way your teeth bite together.
TMJ damage may be the result of clenching your jaw excessively or grinding your teeth (usually at night), or may be a consequence of breathing disturbances, night time disordered breathing or sleep apnoea. TMJ damage can also be caused by injuries to the head and neck region or arthritis. There is help, learn more about our mouth guards on our local websites.