title: Development of the norm concept in orthodontics.
authors.affiliation: michaeltrenouth@hotmail.co.uk
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Trenouth
authors.forename: Stanley
authors.initials: S
authors.lastname: Gelbier
mesh_terms: D002508:Cephalometry / Q000266:history* / Q000706:statistics & numerical data; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D016011:Normal Distribution; D009970:Orthodontics / Q000266:history*; D012016:Reference Values