GrindReliefN is an FDA-approved mouth guard that stops mouth clenching and teeth grinding at night. It is uniquely designed to relax your jaw muscles while you sleep. Another great thing about it is that it fits right to the form of your teeth and can be re-modeled as many times as you like. It was patented and developed by a practicing Dentist and is less expensive than any other mouth guard you can get from a Dentist's office.