Powers J M, Fan P L, Raptis C N
J Dent Res. 1980 Dec;59(12):2071-4. doi: 10.1177/00220345800590120801.
The color stability of seven commercial composite restorative materials under conditions of accelerated aging was evaluated by reflection spectrophotometry at baseline and 300, 600, and 900 h. During early aging the composites generally became darker, more chromatic, and more opaque. Changes in color of the conventional composites during aging were influenced by erosion of the resin matrices and exposure of filler particles. Color stability of the microfilled composites under the in vitro conditions tested was better than that of the conventional composites and did not appear to be influenced as much by erosion.
通过反射分光光度法在基线以及300、600和900小时时，对七种市售复合树脂修复材料在加速老化条件下的颜色稳定性进行了评估。在早期老化过程中，复合材料通常会变得更暗、更显色且更不透明。老化过程中传统复合材料的颜色变化受树脂基质侵蚀和填料颗粒暴露的影响。在所测试的体外条件下，微填料复合材料的颜色稳定性优于传统复合材料，并且似乎受侵蚀的影响较小。
