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袁福来, 戴宁, 田素坤, 张贝, 孙玉春, 俞青, 刘浩. 采用条件生成式对抗网络的缺损牙全冠修复技术[J]. 计算机辅助设计与图形学学报, 2019, 31(12): 2113-2120. DOI: 10.3724/SP.J.1089.2019.17774
引用本文: 袁福来, 戴宁, 田素坤, 张贝, 孙玉春, 俞青, 刘浩. 采用条件生成式对抗网络的缺损牙全冠修复技术[J]. 计算机辅助设计与图形学学报, 2019, 31(12): 2113-2120. DOI: 10.3724/SP.J.1089.2019.17774
Yuan Fulai, Dai Ning, Tian Sukun, Zhang Bei, Sun Yuchun, Yu Qing, Liu Hao. A Full Crown Restoration Approach for Defect Teeth Based on CGAN[J]. Journal of Computer-Aided Design & Computer Graphics, 2019, 31(12): 2113-2120. DOI: 10.3724/SP.J.1089.2019.17774
Citation: Yuan Fulai, Dai Ning, Tian Sukun, Zhang Bei, Sun Yuchun, Yu Qing, Liu Hao. A Full Crown Restoration Approach for Defect Teeth Based on CGAN[J]. Journal of Computer-Aided Design & Computer Graphics, 2019, 31(12): 2113-2120. DOI: 10.3724/SP.J.1089.2019.17774

采用条件生成式对抗网络的缺损牙全冠修复技术

A Full Crown Restoration Approach for Defect Teeth Based on CGAN

  • 摘要: 针对传统手工修复缺损牙治疗周期长,牙科CAD系统修复缺乏个性化的问题,提出一种结合条件生成式对抗网络和高维特征损失约束的全冠咬合面个性化设计方法.首先,通过计算三维牙齿曲面深度信息,获取患牙预备体及其他条件模型的二维深度图并构建数据集;其次,以对颌牙条件数据作为咬合关系约束,同名对称牙冠数据作为形态辅助信息,利用构建的网络模型实现预备体数据向目标牙冠数据的空间映射;然后,将生成的牙冠深度图重建为三维网格模型,完成缺损牙的形态重建;最后,选取部分患牙模型进行实验测试,分析了不同约束条件对生成的牙冠咬合面形态的影响,对比了不同修复方法重建牙冠的质量.结果表明,该方法能够高效、个性化地重建全冠咬合面的解剖特征,满足缺损牙功能性修复的设计要求.

     

    Abstract: The traditional manual restoration for defect teeth is time-consuming and the crown restoration made by dental CAD/CAM systems lacks personalized anatomical features.This paper proposes a novel method for full crown restoration based on conditional generative adversarial networks and high-dimensional features loss function.First,the 2D depth maps of the tooth preparation and conditional models are obtained by calculating the depth information of the 3D model,and then the dataset for the network model is constructed.Second,the network model applies the opposing tooth to constraint occlusion relationship and uses the symmetrical tooth with same position as supplementary information,and then the network model maps the tooth preparation to the crown designed by technicians.After that,the tooth crown depth map generated by the network model is reconstructed into a three-dimensional mesh model.Finally,some dental models are selected for the experiment,the effects of different constraints on the occlusal surface morphology of generated crowns are analyzed and the quality of crowns repaired by different methods is compared.The experimental results show that this restoration method can reconstruct the personalized anatomical features on the crown occlusal surface efficiently and fulfill the requirements of full functionality restoration principles for the defect tooth.

     

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