title: Fixed piston appliance for rapid Class II correction.
authors.forename: R L
authors.initials: RL
authors.lastname: Greenfield
mesh_terms: D002508:Cephalometry; D002648:Child; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D016382:Orthodontic Appliance Design; D009971:Orthodontics, Corrective / Q000295:instrumentation* / Q000379:methods