title: Clinical outcome with mandibular second versus first premolar extractions in orthodontic treatment.
authors.forename: Björn U
authors.initials: BU
authors.lastname: Zachrisson
mesh_terms: D001641:Bicuspid; D005145:Face / Q000033:anatomy & histology; D006801:Humans; D007180:Incisor; D008334:Mandible; D014081:Tooth Extraction; D014087:Tooth Movement Techniques / Q000379:methods*; D016896:Treatment Outcome