title: Premolar extraction and smile esthetics.
authors.forename: Björn U
authors.initials: BU
authors.lastname: Zachrisson
mesh_terms: D001641:Bicuspid / Q000601:surgery; D003481:Cuspid / Q000502:physiology; D004955:Esthetics, Dental; D005145:Face / Q000033:anatomy & histology; D006801:Humans; D007180:Incisor / Q000502:physiology; D009967:Orthodontic Appliances; D012904:Smiling; D019228:Tooth Crown; D014081:Tooth Extraction; D014087:Tooth Movement Techniques / Q000379:methods*; D019415:Torque