a removable acrylic appliance to minimize the effects of grinding (bruxism) and TMJ associated problems.
A night guard is a plastic device that covers all of the upper or lower teeth. A night guard is used to prevent wear on the teeth caused by tooth grinding during sleep a medical condition known as Bruxism. Nightguards also help prevent TMJ and clenching disorders.
A device used to stabilise the teeth and reduce the traumatic effects of bruxism. ... (05 Mar 2000) ... 
A removable appliance worn at night to help an individual minimize the damage or wear while clenching or grinding teeth during sleep.
Type: Term Pronunciation: nīt′gard Definitions: 1. A device used to stabilize the teeth and reduce the traumatic effects of bruxism.
A removable acrylic appliance to minimize the effects of grinding the teeth (Bruxism) or joint problems. Usually worn at night to prevent the grinding of teeth or relieve joint pain. Also known as an occlusal guard.