1) Bite plate 2) Dental appliance 
A removable appliance that incorporates a plane of acrylic designed to occlude with the opposing teeth. ... (05 Mar 2000) ... 
(bīt´plāt) bite plate an appliance, usually plastic or wire, worn in the palate as a diagnostic or therapeutic adjunct in orthodontics or prosthodontics.
Type: Term Pronunciation: bīt′plāt, bīt′plān Definitions: 1. A removable appliance that incorporates a plane of acrylic designed to occlude with the opposing teeth.
[n] - a removable dental appliance that is worn in the palate for diagnostic or therapeutic purposes
a removable appliance worn in the mouth to separate the jaws so that some of the teeth will gradually shift upward or downward.