What is the definition or description of: night guard?

Plastic mouthpiece: A plastic mouthpiece that is worn at night. There are over 100 different designs and they do different things.

Protector: A night guard is a custom designed protector for one's teeth. It may be constructed out of hard plastic, soft rubber material or a combination of the two. They may also include wire clasps, to securely keep them in place. They are designed to fit snugly on the upper or lower teeth. They may cover all of the teeth in the arch or just a section (anterior or posterior).

Night Guard is...: A removable, custom-fitted plastic appliance that fits between the upper and lower teeth to prevent them from grinding against each other.

Decrease wear: Night guard is used to separate teeth , it will help patient that are grinder and clincher.