title: Treatment of severe Class II Division 1 deep overbite malocclusion without extractions in an adult.
abstract: This case report describes the orthodontic treatment and retention of an adult with severe Class II Division 1 deep overbite malocclusion; treatment was completed without premolar extractions. We used improved superelastic nickel-titanium alloy wire (L&H Titan, Tomy, Tokyo, Japan) with J-hook headgear for the combined intrusion of the anterior segment and the distalization of the maxillary posterior segments. The overbite was corrected from 6.0 to 2.0 mm by intrusion of the maxillary and mandibular incisors; the overjet was corrected from 13.0 to 2.0 mm. Although no premolars were extracted, good occlusion and facial esthetics were achieved. Follow-up records 2 years after active treatment show that the results were maintained.
authors.affiliation: Orthodontic Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. holy.orts@tmd.ac.jp
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Horiuchi
authors.forename: Mariko
authors.initials: M
authors.lastname: Horiuchi
authors.forename: Kunimichi
authors.initials: K
authors.lastname: Soma
mesh_terms: D000328:Adult; D002508:Cephalometry; D003722:Dental Alloys; D005115:Extraoral Traction Appliances; D005260:Female; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008964:Molar, Third / Q000601:surgery; D009532:Nickel; D009969:Orthodontic Wires; D009971:Orthodontics, Corrective / Q000295:instrumentation* / Q000379:methods*; D014025:Titanium; D014081:Tooth Extraction
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium