These are clear thermoplastic  appliances we fabricate to fit over your teeth. They help reduce problems caused by bruxism, grinding, and clenching. You are a candidate for a guard if you have headaches, teeth sensitivity or  extreme wear on your teeth.  T. M. J. Disorder (temporomandibular joint disorder) can be extremely painful , but can be lessened by a splint. Severe cases might need a referral to a specialist.