title: Treatment of angle class II, div. 1, with the aid of the headgear.
mesh_terms: D001294:Attitude to Health; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008445:Maxillofacial Development; D009042:Motivation; D009910:Oral Hygiene; D009968:Orthodontic Appliances, Removable