title: Second molar extractions and open coiled springs for distalization of buccal segments.
authors.forename: E H
authors.initials: EH
authors.lastname: Williamson
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008963:Molar / Q000601:surgery*; D009967:Orthodontic Appliances; D012690:Serial Extraction; D014087:Tooth Movement Techniques / Q000295:instrumentation