title: THE problem in orthodontics.
authors.forename: Robert G
authors.initials: RG
authors.lastname: Keim
mesh_terms: D006801:Humans; D008310:Malocclusion / Q000145:classification / Q000517:prevention & control / Q000628:therapy*; D016382:Orthodontic Appliance Design; D018704:Orthodontic Retainers / Q000145:classification; D012008:Recurrence