#space maintainance

What is the Nance Appliance? The Nance is a fixed (non-removable) appliance that is cemented to the upper first molars connected by a wire containing a piece of acrylic (plastic) in the center of the wire, which fits against the roof of the mouth. The Nance acts as a space maintainer to keep the molars from drifting forward and to prevent them from blocking the space where the permanent teeth will eventually erupt. It can also be used to slightly expand or rotate the upper molars.