title: Accuracy of using computer-aided rapid prototyping templates for mandible reconstruction with an iliac crest graft.
abstract: BACKGROUND
  This study aimed to evaluate the accuracy of surgical outcomes in free iliac crest mandibular reconstructions that were carried out with virtual surgical plans and rapid prototyping templates.
  
  
  METHODS
  This study evaluated eight patients who underwent mandibular osteotomy and reconstruction with free iliac crest grafts using virtual surgical planning and designed guiding templates. Operations were performed using the prefabricated guiding templates. Postoperative three-dimensional computer models were overlaid and compared with the preoperatively designed models in the same coordinate system.
  
  
  RESULTS
  Compared to the virtual osteotomy, the mean error of distance of the actual mandibular osteotomy was 2.06 ± 0.86 mm. When compared to the virtual harvested grafts, the mean error volume of the actual harvested grafts was 1412.22 ± 439.24 mm3 (9.12% ± 2.84%). The mean error between the volume of the actual harvested grafts and the shaped grafts was 2094.35 ± 929.12 mm3 (12.40% ± 5.50%).
  
  
  CONCLUSIONS
  The use of computer-aided rapid prototyping templates for virtual surgical planning appears to positively influence the accuracy of mandibular reconstruction.
authors: Da-long
authors: DL
authors: Shu
authors: Xiang-zhen
authors: XZ
authors: Liu
authors: Bing
authors: B
authors: Guo
authors: Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Sun Yat-sen University, No, 58 Zhongshan Er Road, Guangzhou 510080, China. ranweigd@163.com.
authors: Wei
authors: W
authors: Ran
authors: Xin
authors: X
authors: Liao
authors: Yun-yan
authors: YY
authors: Zhang
mesh_terms: D000328:Adult; D000564:Ameloblastoma / Q000473:pathology / Q000601:surgery*; D016025:Bone Transplantation; D017076:Computer-Aided Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium / Q000637:transplantation*; D007091:Image Processing, Computer-Assisted; D008297:Male; D008339:Mandibular Neoplasms / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D010027:Osteotomy; D011379:Prognosis; D019651:Plastic Surgery Procedures; D014057:Tomography, X-Ray Computed; D055815:Young Adult