Signs of TMJ (temporo-mandibular joint disorder) include, but are not limited to pain or tenderness of your jaw, an aching pain in and around your ear, difficulty chewing or discomfort while chewing, aching facial pain and/or locking of the joint, making it difficult to open or close your mouth. TMJ disorders can sometimes cause a clicking or grinding sound when you open your mouth. Often, we can help alleviate TMJ symptoms with a nightguard. A nightguard acts as a protective layer between your top and bottom teeth so that you wear down on the guard rather than your teeth. A custom fit nightguard can help prevent and lessen the symptoms of TMJ.