[基于摆位微笑设计唇部对称参考平面的全数字化工作流程的初步临床应用验证]
[Preliminary clinical application verification of complete digital workflow of design lips symmetry reference plane based on posed smile].
作者信息
Qiu S T, Zhu Y J, Wang S M, Wang F L, Ye H Q, Zhao Y J, Liu Y S, Wang Y, Zhou Y S
机构信息
Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
Center of Digital Dentistry, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
出版信息
Beijing Da Xue Xue Bao Yi Xue Ban. 2022 Feb 18;54(1):193-199. doi: 10.19723/j.issn.1671-167X.2022.01.031.
OBJECTIVE
To automatically construct lips symmetry reference plane (SRP) based on posed smile, and to evaluate its advantages over conventional digital aesthetic design.
METHODS
Eighteen subjects' three-dimensional facial and dentition data were gathered in this study. The lips SRP of experimental groups were used with the standard weighted Procrustes analysis (WPA) algorithm and iterative closest point (ICP), respectively. A reference plane defined by experts based on regional ICP algorithm, served as the truth plane. The angle error values between the lips SRP of WPA algorithm in the experimental groups and the truth plane were evaluated in this study, and the lips SRP of ICP algorithm of the experimental groups was calculated in the same way. The lips SRP based on posed smile as a reference for aesthetic design and evaluate preliminary clinical application.
RESULTS
The average angle error between the lips SRP of WPA algorithm and the truth plane was 1.78°±1.24°, which was smaller than that between the lips SRP of ICP and the truth plane 7.41°±4.31°. There were significant differences in the angle errors among the groups ( < 0.05). In the aesthetic design of anterior teeth, automatically constructing the lips SRP of WPA algorithm based on posed smile and the original symmetry plane by re-ference compared with the prosthetic design, the subjects' scores on the lips SRP of WPA algorithm based on posed smile (8.48±0.57) were higher than those on the original symmetry plane (5.20±1.31).
CONCLUSION
Automatically constructing the lips SRP of WPA algorithm based on posed smile was more accurate than ICP algorithm, which was consistent with the truth plane. Moreover, it can provide an important reference for oral aesthetic diagnosis and aesthetic analysis of the restoration effect. In the aesthetic design of anterior teeth, automatically constructing the lips SRP of WPA algorithm based on posed smile can improve the patients' satisfaction in esthetic rehabilitation.
目的
基于 posed 微笑自动构建唇部对称参考平面（SRP），并评估其相较于传统数字美学设计的优势。
方法
本研究收集了 18 名受试者的三维面部和牙列数据。实验组的唇部 SRP 分别采用标准加权 Procrustes 分析（WPA）算法和迭代最近点（ICP）算法。由专家基于区域 ICP 算法定义的参考平面作为真值平面。本研究评估了实验组中 WPA 算法的唇部 SRP 与真值平面之间的角度误差值，并以相同方式计算了实验组 ICP 算法的唇部 SRP。将基于 posed 微笑的唇部 SRP 作为美学设计的参考并评估其初步临床应用。
结果
WPA 算法的唇部 SRP 与真值平面之间的平均角度误差为 1.78°±1.24°，小于 ICP 算法的唇部 SRP 与真值平面之间的 7.41°±4.31°。组间角度误差存在显著差异（<0.05）。在前牙美学设计中，与修复体设计相比，基于 posed 微笑自动构建 WPA 算法的唇部 SRP 和原始对称平面，受试者对基于 posed 微笑的 WPA 算法的唇部 SRP 的评分（8.48±0.57）高于对原始对称平面的评分（5.20±1.31）。
结论
基于 posed 微笑自动构建 WPA 算法的唇部 SRP 比 ICP 算法更准确，与真值平面一致。此外，它可为口腔美学诊断和修复效果的美学分析提供重要参考。在前牙美学设计中，基于 posed 微笑自动构建 WPA 算法的唇部 SRP 可提高患者对美学修复的满意度。
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