Swift E J, Hammel S A, Lund P S
University of North Carolina, Department of Operative Dentistry, School of Dentistry, Chapel Hill.
Int J Prosthodont. 1994 Jul-Aug;7(4):356-61.
The shades of several resin composite materials are keyed to the Vita Lumin shade guide. This study was designed to determine whether different composites of the same designated Vita shade were actually similar in color. A small-area colorimeter was used to compare the Lab* color parameters of three hybrid resin composites--Pertac-Hybrid, Prisma AP.H, and XRV Herculite. Four Vita shades (A2, B3, C2, and D3) of each material were evaluated. Color differences (delta E values) between composites of the same designated shade ranged from 2.07 for the A2 shades of Herculite and AP.H to 7.64 for the D3 shades of Herculite and Pertac. Color differences in this range are perceptible to many observers under ideal viewing conditions.
几种树脂复合材料的色号与Vita Lumin比色板相对应。本研究旨在确定相同指定Vita色号的不同复合材料在颜色上是否真的相似。使用小型色差仪比较三种混合树脂复合材料——Pertac-Hybrid、Prisma AP.H和XRV Herculite的Lab*颜色参数。对每种材料的四个Vita色号（A2、B3、C2和D3）进行了评估。相同指定色号的复合材料之间的颜色差异（ΔE值）范围为，Herculite和AP.H的A2色号为2.07，Herculite和Pertac的D3色号为7.64。在理想观察条件下，许多观察者都能察觉到这个范围内的颜色差异。
