The Bonded Lingual Retainer (or Fixed Lingual Retainer (FLR)) is a fixed appliance used to retain teeth after final treatment. It is attached to the lingual surfaces of the upper or lower arches, and is invisible from the facial view. Options include a variety of wire types, pads, and seating jigs. Available on the upper or lower arch. This appliance can also be added to a hawley or essix package! Also available in a fully 3D printed version.