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首页> 外文期刊>The Journal of Prosthetic Dentistry >Designing visually optimal shade guides.
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Designing visually optimal shade guides.

机译：设计视觉上最佳的阴影指南。

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STATEMENT OF PROBLEM: Dental shade guides do not provide a broad coverage of tooth colors. There is a need for shade guides that can provide closer color matches. PURPOSE: The purpose of this study was to propose and assess a visually optimal shade guide for tooth color matching. MATERIAL AND METHODS: With the use of a spectrophotometric approach, the color distribution (L*a*b*) of 150 extracted human teeth and 3 commercially available shade guides (Vita Lumin V, Trubyte Bioform Color Order Shade Guide, and Vitapan 3D-Master Shade System) was measured. With the use of a hierarchical clustering approach, a series of shade guides was designed with a varying number of tabs. The average error (DeltaE) between colors from each shade guide and the extracted teeth was computed. RESULTS: The proposed visually optimal shade guide had the smallest average error of all guides tested. The new guide achieved lower error with fewer shade tabs than the 3 commercial systems evaluated. CONCLUSION: Within the limitations of this study, it was demonstrated that a hierarchical clustering technique can be used to design a visually optimal shade guide for a given population with a flexible degree of control over the mean error and number of tabs.
机译：问题陈述：牙科阴影引导器不能广泛涵盖牙齿的颜色。需要可以提供更接近的色彩匹配的阴影指南。目的：本研究的目的是提出和评估一种视觉上最佳的用于牙齿颜色匹配的阴影指南。材料与方法：使用分光光度法，对150颗拔出的人类牙齿的颜色分布（L * a * b *）和3种市售阴影指南（Vita Lumin V，Trubyte Bioform颜色顺序阴影指南和Vitapan 3D-测量主阴影系统）。通过使用分层聚类方法，设计了一系列带有不同数量标签的阴影指南。计算每个阴影指南的颜色与提取的牙齿之间的平均误差（DeltaE）。结果：拟议的视觉最佳阴影指南具有所有测试指南最小的平均误差。与评估的3个商用系统相比，新指南使用更少的阴影选项卡实现了更低的错误。结论：在本研究的范围内，证明了可以使用分层聚类技术为给定的人群设计视觉上最佳的阴影指南，并且可以灵活控制平均误差和标签数量。

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