Tyas M J, Wassenaar P
School of Dental Science, University of Melbourne.
Aust Dent J. 1991 Oct;36(5):369-73. doi: 10.1111/j.1834-7819.1991.tb01359.x.
Four different composite resins (three small particle and one microfill) were placed in 106 posterior teeth and followed over a five-year period. Colour and marginal discoloration characteristics were assessed from standard photographs, and wear evaluated by standardized measurement of cavity wall exposure and scanning electron microscopy of replicas. The colour of the materials changed, but not to an unacceptable degree, over the five-year period, and marginal discoloration increased slightly. The wear rate of the four materials was similar, and appeared to decrease after about 2-4 years. Some materials exhibited surface damage, and some of the microfill restorations failed catastrophically.
将四种不同的复合树脂（三种小颗粒型和一种微填料型）放置在106颗后牙中，并进行了为期五年的跟踪观察。通过标准照片评估颜色和边缘变色特征，并通过标准化测量洞壁暴露情况以及对复制品进行扫描电子显微镜观察来评估磨损情况。在这五年期间，材料的颜色发生了变化，但变化程度尚在可接受范围内，边缘变色略有增加。四种材料的磨损率相似，并且在大约2至4年后似乎有所下降。一些材料出现了表面损伤，一些微填料修复体出现了灾难性失败。
