title: A spring for erupting impacted mandibular second bicuspids.
authors.affiliation: Department of Orthodontics, University of Toronto.
authors.forename: R
authors.initials: R
authors.lastname: Lang
mesh_terms: D001641:Bicuspid; D006801:Humans; D008334:Mandible; D009967:Orthodontic Appliances; D014087:Tooth Movement Techniques / Q000295:instrumentation*; D014095:Tooth, Impacted / Q000628:therapy*