Sidhu Sharanbir K, Ikeda Takatsumi, Omata Yo, Fujita Megumi, Sano Hidehiko
Restorative Dentistry, School of Dental Sciences, University of Newcastle, Newcastle upon Tyne, UK.
Oper Dent. 2006 Sep-Oct;31(5):598-603. doi: 10.2341/05-109.
This study evaluated color and translucency changes caused by light curing resin composite materials.
The CIELAB parameters (L*, a* and b*) of disks of A2 and opaque A2 shades of Charisma (Heraeus-Kulzer), Solare (GC) and Filtek Supreme (3M) were evaluated on the backings of black, white and the material itself both before and after light curing to evaluate color and translucency changes (by means of calculating deltaE* and the translucency parameter, respectively).
Solare and Filtek Supreme showed significantly smaller color changes during light curing than Charisma; however, the value of deltaE* of all the products/shades was still in the clinically unacceptable range. Regarding translucency changes during light curing, the A2 and opaque A2 shades of Charisma showed a statistically significant increase, although no difference was observed in the other products.
Solare and Filtek Supreme tended to show less changes in translucency and color during light curing compared to Charisma. Nevertheless, the changes in color during light curing were still in the range of unacceptable color change. Therefore, direct shade matching of these materials for a precise shade match should be performed by using the cured material.
本研究评估了光固化树脂复合材料引起的颜色和透明度变化。
对魅力（贺利氏古莎）、索拉雷（GC）和Filtek Supreme（3M）的A2色和不透明A2色圆盘在黑色、白色和材料本身的基底上，在光固化前后评估CIELAB参数（L*、a和b），以评估颜色和透明度变化（分别通过计算ΔE*和透明度参数）。
索拉雷和Filtek Supreme在光固化过程中显示出比魅力更小的颜色变化；然而，所有产品/色号的ΔE*值仍处于临床不可接受范围内。关于光固化过程中的透明度变化，魅力的A2色和不透明A2色号显示出统计学上的显著增加，尽管在其他产品中未观察到差异。
与魅力相比，索拉雷和Filtek Supreme在光固化过程中透明度和颜色变化较小。然而，光固化过程中的颜色变化仍在不可接受的颜色变化范围内。因此，应使用固化材料对这些材料进行直接比色以实现精确的颜色匹配。
