A Bite guard which are professionally known as occlusal guard is an appliance made by a dental lab. They are for people that grind their teeth usually when they are sleeping. The grinding overtime causes enamel wear which can result in jaw soreness and eventually teeth soreness. If left untreated can result in tooth loss. If you are experiencing any of these symptoms you should contact a dentist. Dr. Stevens has a lab that makes an occlusal guard that is comfortable to wear.