title: [Palatal collapse. Quad-helix therapy (III)].
mesh_terms: D000202:Activator Appliances; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D009968:Orthodontic Appliances, Removable; D010155:Palatal Expansion Technique; D010159:Palate / Q000002:abnormalities*
vernacular_title: Le contrazioni del palato. Terapia del quad-helix (nota III).