Tyas M J, Truong V T, Goldman M, Beech D R
Aust Dent J. 1989 Apr;34(2):147-53. doi: 10.1111/j.1834-7819.1989.tb04624.x.
Six different composite resin restorative materials were placed in posterior Class I and Class II cavities and evaluated at one and two years after placement for colour, marginal discoloration, and wear. Wear was determined by comparison with standard models and by SEM. All materials darkened over the study period but remained an acceptable match. Marginal discoloration increased. The trend of relative wear was in accordance with predictions from fracture mechanics. Insufficient restorations in one material were available at two years for it to be included in the results. The microfine materials used in this study suffered surface damage (micro-chipping) in high stress areas, again consistent with fracture mechanics predictions.
将六种不同的复合树脂修复材料置于后牙Ⅰ类和Ⅱ类洞型中，并在充填后一年和两年时对颜色、边缘变色和磨损情况进行评估。通过与标准模型比较及扫描电子显微镜确定磨损情况。在研究期间，所有材料均变暗，但仍保持可接受的匹配度。边缘变色增加。相对磨损趋势与断裂力学的预测结果一致。两年时，有一种材料的修复体数量不足，因此未纳入结果分析。本研究中使用的超细材料在高应力区域出现了表面损伤（微裂纹），这同样与断裂力学的预测结果相符。
