[Dentofacial changes by means of occipital traction type headgears].
D000293:Adolescent; D002508:Cephalometry; D002648:Child; D005115:Extraoral Traction Appliances; D006801:Humans; D008310:Malocclusion / Q000628:therapy; D008445:Maxillofacial Development; D009968:Orthodontic Appliances, Removable