Orthodontics in retrospect and prospect.
D003201:Computers; D003726:Dental Assistants / Q000706:statistics & numerical data; D004497:Education, Dental; D049673:History, 20th Century; D009970:Orthodontics / Q000193:education / Q000266:history; D011331:Private Practice; D011380:Programmed Instructions as Topic; D012106:Research; D012926:Social Control, Formal; D013039:Specialties, Dental; D014481:United States