title: The century behind and the century ahead.
authors.affiliation: St Louis, Mo.
authors.forename: Rolf G
authors.initials: RG
authors.lastname: Behrents
mesh_terms: D005544:Forecasting; D006301:Health Services Needs and Demand / Q000639:trends; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D009970:Orthodontics / Q000266:history / Q000639:trends*; D011643:Publishing / Q000266:history / Q000639:trends; D013674:Technology, Dental / Q000266:history / Q000639:trends; D014481:United States