title: The origin of treatment expansion.
authors.forename: Julien
authors.initials: J
authors.lastname: Philippe
mesh_terms: D049671:History, 18th Century; D049672:History, 19th Century; D049674:History, 21st Century; D006801:Humans; D009967:Orthodontic Appliances / Q000266:history*; D009971:Orthodontics, Corrective / Q000266:history* / Q000295:instrumentation; D010155:Palatal Expansion Technique / Q000266:history / Q000295:instrumentation