title: Evaluation of the prognosis and causes of failure in 182 cases of autogenous tooth transplantation.
abstract: OBJECTIVE
  Autotransplantation is a viable option for treating missing teeth when a donor tooth is available. The aim of this study was to evaluate the prognosis in addition to the causes of failure in 182 autotransplanted teeth.
  
  
  METHODS
  A total of 182 cases of autotransplantation were analyzed. All the transplants were performed according to a computer-aided rapid prototyping technique with an average extraoral time of 7.58 minutes. These cases were followed for 2 to 60 months after surgery. The prognosis was divided into 4 groups, complete healing, incomplete healing, uncertain healing, and failure. The initial stability, root resorption, and ankylosis were also analyzed.
  
  
  RESULTS
  Most transplanted teeth showed complete healing between postoperative 2 months and 8 months. The transplanted teeth with a good initial stability showed better initial healing than those with a poor initial stability. The average extraoral time was 7.58 min (range: immediately after extraction up to 25 min). There was no relationship (P > .05) between the extraoral time and either root resorption (4 cases, 2.4%) or ankylosis (18 cases, 10.7%) within this experimental time period. Nine cases (4.5%) failed.
  
  
  CONCLUSIONS
  This study showed a 4.5% failure rate during the short to intermediate observation period. Autotransplantation is a very useful method for replacing missing teeth, provided that the extraoral time and other factors are well controlled.
authors.affiliation: Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, South Korea.
authors.forename: Euiseong
authors.initials: E
authors.lastname: Kim
authors.forename: Jae-Yong
authors.initials: JY
authors.lastname: Jung
authors.forename: In-Ho
authors.initials: IH
authors.lastname: Cha
authors.forename: Kee-Yeon
authors.initials: KY
authors.lastname: Kum
authors.forename: Seung-Jong
authors.initials: SJ
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D003765:Models, Dental; D019647:Oral Surgical Procedures / Q000009:adverse effects / Q000379:methods*; D011379:Prognosis; D012391:Root Resorption / Q000209:etiology; D025321:Surgery, Computer-Assisted; D014021:Tissue Preservation; D014070:Tooth / Q000637:transplantation*; D020254:Tooth Ankylosis / Q000209:etiology; D014081:Tooth Extraction; D014086:Tooth Mobility / Q000209:etiology; D014182:Transplantation, Autologous / Q000009:adverse effects*; D017211:Treatment Failure; D014945:Wound Healing