title: Nasomaxillary hypoplasia with a congenitally missing tooth treated with LeFort II osteotomy, autotransplantation, and nickel-titanium alloy wire.
abstract: BACKGROUND
  In some skeletal Class III adult patients with nasomaxillary hypoplasia, the LeFort I osteotomy provides insufficient correction. This case report describes a 20-year-old woman with a combination of nasomaxillary hypoplasia and a protrusive mandible with a congenitally missing mandibular second premolar.
  
  
  METHODS
  We performed a LeFort II osteotomy for maxillary advancement. Autotransplantation of a tooth was also performed; the donor tooth was used to replace the missing permanent tooth. To increase the chance of success, we applied light continuous force with an improved superelastic nickel-titanium alloy wire technique before extraction and after transplantation.
  
  
  RESULTS
  The patient's profile and malocclusion were corrected, and the autotransplanted tooth functioned well. The postero-occlusal relationships were improved, and ideal overbite and overjet relationships were achieved.
  
  
  CONCLUSIONS
  The methods used in this case represent a remarkable treatment.
authors: Assistant professor, Department of Orofacial Development and Function, Division of Oral Health Sciences, Graduate School, Tokyo Medical Dental University, Tokyo, Japan. Electronic address: takaorts@tmd.ac.jp.
authors: Takayoshi
authors: T
authors: Ishida
authors: Private practice, Tokyo, Japan.
authors: Shigehiro
authors: S
authors: Ikemoto
authors: Professor and chair, Department of Orofacial Development and Function, Division of Oral Health Sciences, Graduate School, Tokyo Medical Dental University, Tokyo, Japan.
authors: Takashi
authors: T
authors: Ono
mesh_terms: D000848:Anodontia / Q000601:surgery*; D064592:Autografts / Q000637:transplantation*; D001641:Bicuspid / Q000002:abnormalities* / Q000637:transplantation; D003722:Dental Alloys / Q000737:chemistry*; D005260:Female; D006801:Humans; D008313:Malocclusion, Angle Class III / Q000601:surgery; D008437:Maxilla / Q000002:abnormalities* / Q000601:surgery; D009532:Nickel / Q000737:chemistry*; D009666:Nose / Q000002:abnormalities* / Q000601:surgery; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation; D016382:Orthodontic Appliance Design; D009969:Orthodontic Wires; D019340:Osteotomy, Le Fort / Q000379:methods*; D010347:Patient Care Planning; D011378:Prognathism / Q000601:surgery; D014025:Titanium / Q000737:chemistry*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium