title: Clinical application of computer-aided rapid prototyping for tooth transplantation.
abstract: The maintenance of healthy periodontal ligament cells in the donor tooth is one of the most important factors for successful tooth transplantation. This is achieved by minimizing the extraoral time during the surgical procedure. If a duplicate form of donor tooth could be obtained before extraction, it would be possible to precontour the recipient alveolar bone compatible with the donor tooth, and thereby reduce the extra-oral time of the donor tooth. We obtained a three-dimensional image with the real dimensions of the donor tooth from a CT Highspeed Advantage, allowing a life-sized resin model of the tooth to be fabricated. From 22 clinical cases, we achieved an average total transplantation time of 7.7 min. The average distance between the transplanted root surface and the alveolar bone from 12 available cases was 0.87 mm at the mesial cervix, 0.91 mm at the mesial apex, 0.98 mm at the distal cervix and 1.16 mm at the distal apex on the postoperative radiographs. Clinical data indicate that computer-aided rapid prototyping may be of value in minimizing the extra-oral time and possible injury to transplanted tooth during the process of autotransplantation.
authors.affiliation: Department of Conservative Dentistry & Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Korea.
authors.forename: S J
authors.initials: SJ
authors.lastname: Lee
authors.forename: I Y
authors.initials: IY
authors.lastname: Jung
authors.forename: C Y
authors.initials: CY
authors.lastname: Lee
authors.forename: S Y
authors.initials: SY
authors.lastname: Choi
authors.forename: K Y
authors.initials: KY
authors.lastname: Kum
mesh_terms: D000328:Adult; D000539:Alveolar Process / Q000033:anatomy & histology; D000543:Alveoloplasty; D017076:Computer-Aided Design; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D008953:Models, Anatomic; D008964:Molar, Third / Q000637:transplantation; D010347:Patient Care Planning; D010513:Periodontal Ligament / Q000166:cytology; D013997:Time Factors; D014021:Tissue Preservation; D014057:Tomography, X-Ray Computed; D014070:Tooth / Q000000981:diagnostic imaging / Q000637:transplantation*; D019227:Tooth Apex / Q000033:anatomy & histology; D019237:Tooth Cervix / Q000033:anatomy & histology; D014182:Transplantation, Autologous