Extra oral force therapy.
D003818:Dentition, Mixed; D006801:Humans; D008310:Malocclusion / Q000628:therapy; D009967:Orthodontic Appliances; D009968:Orthodontic Appliances, Removable; D012690:Serial Extraction; D014087:Tooth Movement Techniques / Q000295:instrumentation; D014143:Traction / Q000295:instrumentation