Generation of a 3D printed tooth model and evaluation of the anatomic fidelity
SONG Ying1,2, TANG Lei1, WU Bu-ling2, LI Jian-yi1, WANG Wen-hao3, XU Chu1,2, BAI Yu-zhe4, YI Si1,XU Di-wei1
Chinese Journal of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (3) : 298-302.
Generation of a 3D printed tooth model and evaluation of the anatomic fidelity
Objective To generate a 3D printed tooth model with a specific focus on anatomic fidelity instead of extracted tooth for dental training and preoperative surgical rehearsal. Methods Appropriate materials and machines of 3D printing were selected in this research. We made a test to explore the shaping ability of root canal among three kinds of materials. Intact human incisor of one root canal, premolar of bi root canals, molars of two and three root canals were screened out by Cone Beam Computed Tomography. Then we reconstructed the 3D models and generated 3D printed tooth models after scanning of the teeth by Micro-CT. The reconstruction of printed models to the reconstruction of real tooth was compared, we made an evaluation of the anatomic fidelity of the models by Geomagic Qualify 11. Results The printed tooth models are successfully produced. In terms of surface morphology, the absolute deviations were (0.008121±0.0480) mm in Wic300a models and (0.009554±0.0526) mm in E-Dent models. While the absolute deviations were (0.04518±0.1022) mm in Wic300a models and (0.056953±0.1995) mm in E-Dent models in pulp cavity morphology. Conclusion The printed tooth models are highly realisticin the terms of morphology and this model serves as an excellent replica of human teeth for training and preoperative surgical rehearsal.
3D printing / 3D reconstruction / Anatomic fidelity / Preoperative surgical rehearsal / Dental training
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