Many people “grind” their teeth in their sleep, but are not aware of it until someone tells them about the awful noise they make! They may wake up with a sore jaw or a headache. When they visit the surgery, the dentist will be able to show them how their teeth are being worn away by the constant grinding. An appliance called a” night guard” will be advised. This is a custom made shield which slips over the top teeth at night and protects them from grinding against the lower teeth.