Also found in: Dictionary, Thesaurus, Legal, Idioms.
An appliance used in an attempt to regain space in the dental arches.
1. A device that ameliorates or restores something that was lost.
2. A device that applies pressure between teeth on either side of the space left by a missing tooth. It is used to move teeth away from the edentulous space.
Appliance used to attempt to regain space in dental arches.