The functional regulator (FR-3) of Fränkel.
This article describes the construction of the FR-3 appliance classically used in cases of Class III malocclusion characterized by maxillary skeletal retrusion. Included is a description of proper impression technique, construction bite registration, preparation of the work models, and a complete description of the fabrication of the FR-3 appliance. Specific steps in the clinical management of this appliance are also presented. The cephalometric records of three patients treated with the FR-3 appliance are then presented.
D000180:Acrylic Resins; D000202:Activator Appliances; D002508:Cephalometry; D002648:Child; D003761:Dental Impression Technique; D004867:Equipment Design; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008297:Male; D008313:Malocclusion, Angle Class III / Q000628:therapy; D003765:Models, Dental; D009968:Orthodontic Appliances, Removable; D009969:Orthodontic Wires
D000180:Acrylic Resins