title: [The active plate in changing times].
mesh_terms: D000202:Activator Appliances; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008310:Malocclusion / Q000628:therapy; D009968:Orthodontic Appliances, Removable / Q000266:history; D009970:Orthodontics / Q000266:history
vernacular_title: Die aktive Platte im Wandel der Zeit.