title: Extraction site evolution in orthodontics: "the great second molar debate".
authors.forename: T J
authors.initials: TJ
authors.lastname: Spahl
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008963:Molar / Q000601:surgery*; D009971:Orthodontics, Corrective / Q000379:methods*; D014081:Tooth Extraction / Q000706:statistics & numerical data*