title: Results of transplanting developing third molars as part of orthodontic space management. Part 1: clinical and radiographic results.
abstract: METHODS
  The aim of the present study was to contribute to a more accurate indication and better integration of developing third molar transplantation into orthodontic space management, using the results gleaned from the authors' own pool of patients. For this purpose, a clinical and radiographic examination of 61 transplanted developing molars in 57 patients was carried out after an average of 3.3 years.
  
  
  RESULTS
  The overall success rate was 85%. Failure was due in 10% of cases to impaired periodontal healing (inflammatory root resorption, ankylosis, or increased pocket probing depths) and in 5% of cases to insufficient or arrested postoperative root development accompanied by increased transplant mobility. The incidence of postoperative cessation of further root development was significantly higher (p = 0.011) in transplants at early developmental stages, which also had a negative impact on the final root length, the crown-root ratio and the mobility values of these transplants.
  
  
  CONCLUSIONS
  The transplantation of developing third molars should be given stronger consideration in treatment plans for orthodontic space management although it represents a real alternative to orthodontic space closure only in exceptional cases. However, unlike implantological or prosthodontic treatment, it offers an opportunity to replace a missing or non-retainable tooth with a patient's own vital and fully functional tooth, provided the appropriate transplant is selected.
authors.affiliation: Department of Orthodontics, University of Hamburg, Germany. bauss.oskar@mh-hannover.de
authors.forename: Oskar
authors.initials: O
authors.lastname: Bauss
authors.forename: Reza
authors.initials: R
authors.lastname: Sadat-Khonsari
authors.forename: Werner
authors.initials: W
authors.lastname: Engelke
authors.forename: Bärbel
authors.initials: B
authors.lastname: Kahl-Nieke
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008964:Molar, Third / Q000637:transplantation*; D019516:Orthodontic Space Closure / Q000379:methods*; D010043:Outcome and Process Assessment, Health Care; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011862:Radiography, Panoramic; D014086:Tooth Mobility / Q000000981:diagnostic imaging*; D014092:Tooth Root / Q000000981:diagnostic imaging / Q000254:growth & development