A night guard or removable oral appliance may be custom made for patients that clench or grind their teeth. Clenching and grinding can cause chipped or cracked teeth, worn enamel, gum recession and bone loss surrounding the teeth. An acrylic night guard is fabricated by dental lab from an impression of the patients teeth. It acts as a cushion or barrier in between the upper and lower teeth to prevent the patient from further damage to their dentition.