title: Autotransplantation of Premolars With a 3-Dimensional Printed Titanium Replica of the Donor Tooth Functioning as a Surgical Guide: Proof of Concept.
abstract: OBJECTIVE
  Autotransplantation of premolars is a good treatment option for young patients who have missing teeth. This study evaluated the use of a preoperatively 3-dimensional (3D)-printed replica of the donor tooth that functions as a surgical guide during autotransplantation.
  
  
  METHODS
  Five consecutive procedures were prospectively observed. Transplantations of maxillary premolars with optimal root development were included in this study. A 3D-printed replica of the donor tooth was used to prepare a precisely fitting new alveolus at the recipient site before extracting the donor tooth. Procedure time, extra-alveolar time, and number of attempts needed to achieve a good fit of the donor tooth in the new alveolus were recorded.
  
  
  RESULTS
  For each transplantation procedure, the surgical time was shorter than 30 minutes. An immediate good fit of the donor tooth in the new alveolus was achieved with an extra-alveolar time shorter than 1 minute for all transplantations.
  
  
  CONCLUSIONS
  These results show that the extra-alveolar time is very short when the surgical guide is used; therefore, the chance of iatrogenic damage to the donor tooth is minimized. The use of a replica of the donor tooth makes the autotransplantation procedure easier for the surgeon and facilitates optimal placement of the transplant.
authors.affiliation: Resident, Department of Oral and Maxillofacial Surgery, Leiden University Medical Center, Leiden, The Netherlands.
authors.forename: Jop P
authors.initials: JP
authors.lastname: Verweij
authors.affiliation: Dentist, Department of Oral Function and Restorative Dentistry, Academic Center for Dentistry Amsterdam (ACTA), Research Institute Move, Amsterdam, The Netherlands.
authors.forename: David Anssari
authors.initials: DA
authors.lastname: Moin
authors.affiliation: Maxillofacial Surgeon, Department of Oral and Maxillofacial Surgery, Leiden University Medical Center, Leiden; Department of Oral and Maxillofacial Surgery, Amphia Hospital, Breda, The Netherlands.
authors.forename: Gertjan
authors.initials: G
authors.lastname: Mensink
authors.affiliation: Orthodontist, Department of Oral and Maxillofacial Surgery, Leiden University Medical Center, Leiden, The Netherlands.
authors.forename: Peter
authors.initials: P
authors.lastname: Nijkamp
authors.affiliation: Dentist, Professor, and Department Head, Department of Oral Function and Restorative Dentistry, Academic Center for Dentistry Amsterdam (ACTA), Research Institute Move, Amsterdam, The Netherlands.
authors.forename: Daniel
authors.initials: D
authors.lastname: Wismeijer
authors.affiliation: Maxillofacial Surgeon, Professor, and Department Head, Department of Oral and Maxillofacial Surgery, Leiden University Medical Center, Leiden, The Netherlands. Electronic address: J.P.R.van_Merkesteyn@lumc.nl.
authors.forename: J P Richard
authors.initials: JP
authors.lastname: van Merkesteyn
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000000981:diagnostic imaging / Q000637:transplantation*; D002648:Child; D054893:Cone-Beam Computed Tomography; D003757:Dental Implantation / Q000295:instrumentation / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D061646:Operative Time; D066330:Printing, Three-Dimensional; D011446:Prospective Studies; D025321:Surgery, Computer-Assisted / Q000379:methods; D014025:Titanium; D014182:Transplantation, Autologous / Q000379:methods
chemical_list: D014025:Titanium