title: Functional appliances questioned.
mesh_terms: D000202:Activator Appliances; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008312:Malocclusion, Angle Class II / Q000503:physiopathology / Q000628:therapy*; D008334:Mandible / Q000254:growth & development; D009968:Orthodontic Appliances, Removable