West China Journal of Stomatology ›› 2020, Vol. 38 ›› Issue (3): 350-355.doi: 10.7518/hxkq.2020.03.022

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Precise tooth preparation technique guided by 3D printing guide plate with quantitative hole

Liu Chunxu, Gao Jing, Zhao Yuwei, Fan Lin, Jia Luming, Hu Nan, Mei Ziyu, Dong Bo, Zhang Qianqian, Yu Haiyang()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prothodontics, West China Hospital of Stomatology, Chengdu 610041, China
  • Received:2019-07-22 Revised:2020-02-05 Online:2020-06-01 Published:2020-05-28
  • Contact: Haiyang Yu E-mail:yhyang6812@scu.edu.cn
  • Supported by:
    The National Key Research and Development Program of China(2016YFC1102704);The National Natural Science Foundation of China(81571006)


The minimum amount of tooth preparation that can be fully controlled is crucial in achieving long-term, stable, and effective aesthetic restoration, which is also a major difficulty in aesthetic restoration. The tooth preparation can be implemented efficiently and accurately through digital technology based on the fixed-deep hole guiding technology. Prior the actual tooth preparation, the technology first designs the virtual contour, layering, and virtual occlusion of the prosthesis on the computer. Then, virtual tooth preparation is carried out by cutting back according to the virtual prosthesis. Next, the virtual drilling operation plan is designed according to the shape of the virtual tooth preparation and the contour of the abutment tooth. Finally, the tooth preparation guide plate is designed and printed in 3D. It realizes the whole process of quantitative and precise guidance of dental preparation, visualizes the restoration space, reduces the clinical operation time, and guarantees the quality of dental preparation. It also promotes the improvement of the teaching quality of digital practical exercises.

Key words: digital design, precise tooth preparation, tooth preparation guide, 3D printing

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