title: Update on the Bass appliance system.
authors.forename: N M
authors.initials: NM
authors.lastname: Bass
mesh_terms: D005115:Extraoral Traction Appliances; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008334:Mandible / Q000254:growth & development; D008445:Maxillofacial Development; D016382:Orthodontic Appliance Design; D017289:Orthodontic Appliances, Functional; D009971:Orthodontics, Corrective / Q000379:methods