The birth of the specialty of orthodontics. 1.
Cook
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D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D049691:History, Medieval; D009967:Orthodontic Appliances / Q000266:history; D009970:Orthodontics / Q000266:history*