Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (9): 1562-1565.doi: 10.3969/j.issn.1673-8225.2011.09.011

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Construction of cyno-mandibular condyle models using three-dimensional imaging and rapid prototyping technology

Han Dong1, Xu Hua1, Dong Jia-sheng1, Shen Guo-xiong1, Yu Zhe-yuan1, Chai Gang1, Ai Song-tao2   

  1. 1Department of Plastic and Reconstructive Surgery, 2Department of Radiology, Ninth People’s Hospital, Medical School of Shanghai Jiao Tong University, Shanghai  200011, China
  • Received:2010-12-07 Revised:2011-01-17 Online:2011-02-26 Published:2011-02-26
  • About author:Han Dong☆, Doctor, Associate chief physician, Master’s supervisor, Department of Plastic and Reconstructive Surgery, Ninth People’s Hospital, Medical School of Shanghai Jiao Tong University, Shanghai 200011, China handong12000@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30700873*

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Abstract:

BACKGROUND: Craniomaxillofacial bone is irregular and has a subtle three-dimensional (3D) structure, and individualized repair of bone defects is very important. Computer-aided design (CAD), computer-aided manufacturing (CAM), rapid prototyping, as well as laser scanning have therefore been applied in craniomaxillofacial surgery.
OBJECTIVE: To develop a novel digital medical support system that enables us to custom-make scaffolds to repair craniomaxillofacial bone defects using CAD/CAM and rapid-prototyping technology.
METHODS: We created positive molds using CT data, CAD/CAM and a rapid prototyping method using 3D printing. Custom-made poly (glycolic acid) (PGA) and polymers poly (lactic acid) (PLA) scaffolds were prefabricated by a positive-negative mold interchange technique. A laser scanning system was used to evaluate the accuracy of the PGA/PLA scaffold.
RESULTS AND CONCLUSION：The mean error was smaller than 0.3 mm and confidence was greater than 95% when the error was smaller than 1 mm. This pilot study suggests that custom-made PGA/PLA scaffolds could accurately reconstruct craniomaxillofacial bone injuries by our digital medical support system.

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