Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (4): 665-668.doi: 10.3969/j.issn.1673-8225.2012.04.022

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Computer aided design and computer aided manufacture of templates in dental implantation  

Liu Li-na1, Yang Min2, Hasi•Bagen3, Xiao Ling4, Fan Hong2   

  1. 1Tianjin Medical University, Tianjin  300070, China; 2First Department of Prosthodontics, 3First Department of Implant, 4Department of Image, Tianjin Stomatology Hospital, Tianjin  300040, China
  • Received:2011-07-29 Revised:2011-09-10 Online:2012-01-22 Published:2014-04-04
  • Contact: Fan Hong, Doctor, Professor, First Department of Prosthodontics, Tianjin Stomatology Hospital, Tianjin 300040, China afanhong@hotmail.com
  • About author:Liu Li-na★, Studying for master’s degree, Physician, Tianjin Medical University, Tianjin 300070, China
  • Supported by:

    Science and Technology Fund of Tianjin Health Bureau, No. 2010KZ124*

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Abstract:

BACKGROUND: Currently, the templates widely used in implant surgery in China were prepared on plaster model. As the three-dimensional structure of the jaw is unclear, accurate implanting is difficult and complications of implantation are prone to exist.
OBJECTIVE: To prepare oral implant templates with CT and computer aided design (CAD)/computer aided manufacture (CAM) in order to locate implants in the right position and direction.
METHODS: Plaster models of maxillary edentulous with location marker were scanned with CT. The MIMICS software was used to reconstruct three-dimensional model and simulate implantation. Simulated implant was located in the ideal position based on the anatomical structure of the implanted jaw and the implanted methods according to prosthetic and aesthetic requests. The information of position angle of the simulated implant was transferred to the template while it was prepared. The data were input rapid prototyping equipment to prepare resin template. The accuracy of the template was tested after implantation in it.
RESULTS AND CONCLUSION: The top deviation of the implant was (0.87±0.21) mm and the bottom deviation was (0.82±  0.16) mm after implantation. The deviation of the implant in the vertical direction was slightly bigger than those in the buccolingual direction and mesiodistal direction. The implant design can be accurately transferred to the template before operation. Implantation can be well guided using this, and it can improve the safety, accuracy and the successful rate.
 

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