title: The new 4 D Arch Developer System.
authors.forename: P P
authors.initials: PP
authors.lastname: Hedrick
mesh_terms: D006801:Humans; D008310:Malocclusion / Q000628:therapy; D016382:Orthodontic Appliance Design; D017289:Orthodontic Appliances, Functional; D009969:Orthodontic Wires; D010155:Palatal Expansion Technique / Q000295:instrumentation