Gatti A M
J Biomed Mater Res. 1987 May;21(5):603-12. doi: 10.1002/jbm.820210506.
Seven composite materials for dental restorations were examined in order to investigate their color stability. Five of these materials are available for anterior and two for posterior teeth. The change in color was achieved by an accelerated aging test with ultraviolet rays and evaluated, for each material, with the measurement of reflectance. Such measurement was obtained by means of a video display computer working as a computerized photometer. The results show two different types of behavior: some materials turn slightly to yellow, while others bleach. The test was completed with a scanning electron microscope morphologic examination of the surfaces.
为了研究七种牙科修复用复合材料的颜色稳定性，对其进行了检测。其中五种材料可用于前牙修复，两种用于后牙修复。通过紫外线加速老化试验实现颜色变化，并通过测量反射率对每种材料进行评估。这种测量是借助一台用作计算机化光度计的视频显示计算机获得的。结果显示出两种不同类型的变化：一些材料略微变黄，而另一些则褪色。通过扫描电子显微镜对材料表面进行形态学检查完成了该测试。
