根据色标指定，比色板标签在相对于三种光源的情况下，光源依赖的颜色变化差异。

Difference in illuminant-dependent color changes of shade guide tabs by the shade designation relative to three illuminants.

作者信息

Cha Hyun-Suk, Lee Yong-Keun

机构信息

Department of Dentistry, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.

出版信息

Am J Dent. 2009 Dec;22(6):350-6.

PMID:20178211

Abstract

PURPOSE

To determine the difference in illuminant-dependent color changes of shade guide tabs of Vita Lumin (VITA), Chromascop (CHRO) and Vita 3D-Master (3D-M) shade guides by the shade designation in each shade guide.

METHODS

Color of 16 tabs of VITA, 20 tabs of CHRO and 29 tabs of 3D-M was measured according to the CIELAB color scale relative to the CIE standard illuminant D65, A and F2. Color differences (deltaEab) between the A1 tab and other VITA tabs, between the 110 tab and other CHRO tabs and between the 0M1 tab and other 3D-M tabs relative to the three illuminants were calculated, and the ratios of deltaEab values relative to the different illuminants [deltaEab(A)/deltaEab(D65), deltaEab(F2)/deltaEab(D65) and deltaEab(F2)/deltaEab(A)] were calculated. Ratios of the hue angle shifts of each shade tab by the change of illuminant over the corresponding value of the Al, the 110 or the 0M1 tab were also calculated. Differences in the ratios of color difference and hue angle shift were analyzed with a repeated measures, two-way analysis of variance (alpha = 0.05).

RESULTS

Ratios of deltaE*ab values by the illuminant were 0.90-1.17, 0.95-1.07 and 0.99-1.06 for the VITA, the CHRO and the 3D-M shade guide, respectively. Ratios of the hue angle shifts by the illuminant were from -1.6 to 1.8 for the VITA, from -7.3 to 1.2 for the CHRO and from -1.2 to 3.1 for the 3D-M. Changes in color and hue angle of shade tabs were significantly different by the shade tab designation when illuminant was changed (P < 0.01).

摘要

目的

根据每个比色板的色号，确定Vita Lumin（VITA）、Chromascop（CHRO）和Vita 3D-Master（3D-M）比色板色标在不同光源下颜色变化的差异。

方法

按照CIELAB色标，相对于CIE标准光源D65、A和F2，测量16个VITA比色板、20个CHRO比色板和29个3D-M比色板的颜色。计算相对于三种光源，A1比色板与其他VITA比色板之间、110比色板与其他CHRO比色板之间以及0M1比色板与其他3D-M比色板之间的颜色差异（ΔEab），并计算不同光源下ΔEab值的比率[ΔEab（A）/ΔEab（D65）、ΔEab（F2）/ΔEab（D65）和ΔEab（F2）/ΔEab（A）]。还计算了每个比色板因光源变化导致的色相角偏移量相对于A1、110或0M1比色板相应值的比率。采用重复测量双向方差分析（α = 0.05）分析颜色差异比率和色相角偏移比率的差异。

结果

对于VITA、CHRO和3D-M比色板，光源导致的ΔE*ab值比率分别为0.90 - 1.17、0.95 - 1.07和0.99 - 1.06。光源导致的色相角偏移比率，VITA为 - 1.6至1.8，CHRO为 - 7.3至1.2，3D-M为 - 1.2至3.1。当光源改变时，比色板的颜色和色相角变化因比色板色标不同而有显著差异（P < 0.01）。