title: A study on the use of an active free-end palatal arch.
mesh_terms: D000293:Adolescent; D000328:Adult; D000539:Alveolar Process; D002648:Child; D002972:Cleft Palate / Q000628:therapy*; D003724:Dental Arch; D006801:Humans; D008437:Maxilla; D008722:Methods; D009968:Orthodontic Appliances, Removable; D009971:Orthodontics, Corrective; D010155:Palatal Expansion Technique