Institute for Reconstructive Sciences in Medicine, Misericordia Hospital, Edmonton, Canada, UK.
J Prosthodont. 2011 Jan;20(1):67-73. doi: 10.1111/j.1532-849X.2010.00651.x. Epub 2010 Nov 5.
The aim of this investigation was to explore the relationship between an objective computer measurement of color difference (ΔE) and subjective clinical opinion of a "good" color match between silicone samples and skin.
In Part 1 of this study, silicone samples were colored to match the skin of 19 African-Canadian subjects based on spectrophotometric measurements and pigment formulae determined by computerized color formulation software. Four iterative samples were prepared for each subject; a ΔE value was recorded for each sample to represent the color difference between the silicone sample and skin. In this article, Part 2, five judges independently assessed the color match of the silicone samples to the skin of each of the subjects. Skin and silicone samples were rated on a five-point scale as a measure of "color match." A multivariate analysis was used to determine relationships between judges' assessments and the following variables: color difference between silicone and skin (ΔE), pigment loading, and skin characteristics (L*, a*, b*).
There was a positive correlation between judges' scores and low ΔE values for the first two samples. All judges rated the first sample a poorer color match than the fourth sample (p < 0.015). The third sample performed better overall according to judges. Increased pigment loading in the fourth sample resulted in poorer scores. A trend was observed in pigment selection based on skin values, though no significant relationships were determined.
Spectrophotometry and computerized color formulation technology offer an enhanced understanding of color for its artistic application in facial prosthetic treatment. While some correlation between the objective and subjective assessments of color match exist, it is not a simple relationship. Further study is required to better understand the relationship between technology and clinical perception, specifically in objective and subjective assessments of a "good" color match of silicone to skin.
本研究旨在探讨客观的颜色差异（ΔE）计算机测量值与硅橡胶样本与皮肤之间“良好”颜色匹配的主观临床意见之间的关系。
在本研究的第一部分中，根据光谱光度测量和计算机色彩配方软件确定的颜料配方，将硅橡胶样本调配至匹配 19 名非裔加拿大受试者的肤色。为每个受试者制备了四个迭代样本；为每个样本记录一个ΔE 值，以代表硅橡胶样本与皮肤之间的颜色差异。在本文的第二部分中，五位评判者独立评估了每个受试者的硅橡胶样本与皮肤的颜色匹配程度。皮肤和硅橡胶样本的颜色匹配度评分均为五分制。采用多元分析来确定评判者的评估与以下变量之间的关系：硅橡胶与皮肤之间的颜色差异（ΔE）、颜料负荷和皮肤特征（L*、a*、b*）。
评判者的评分与前两个样本的低ΔE 值之间存在正相关。所有评判者均认为第一个样本的颜色匹配度不如第四个样本（p < 0.015）。根据评判者的评价，第三个样本总体表现更好。第四个样本中颜料负荷的增加导致评分下降。基于皮肤值的颜料选择呈现出一种趋势，尽管没有确定显著的关系。
分光光度法和计算机色彩配方技术为面部修复治疗中的艺术应用提供了对颜色的更深入理解。虽然客观和主观颜色匹配评估之间存在一定的相关性，但并非简单的关系。需要进一步研究以更好地理解技术与临床感知之间的关系，特别是在硅橡胶与皮肤的“良好”颜色匹配的客观和主观评估方面。
