Many patients are plagued by pain from their jaw joint, which may or may not be accompanied by popping and clicking noises. Other patients grind their teeth at night as they sleep, causing irreversible damage to the teeth. Both situations can affect your quality of life and productivity. An occlusal splint is also known as a nightguard by many patients. It is a custom made mouthpiece that prevents the teeth from grinding against each other and minimizes stress on the jaw joint which is the cause of TMJ/TMD pain in many patients.