Tani Y, Togaya T, Ishikawa A, Watanabe Y, Maruyama K, Katsuyama S
Department of Biomaterials, Research Center for Biomedical Engineering, Kyoto University, Japan.
Dent Mater J. 1994 Dec;13(2):174-81. doi: 10.4012/dmj.13.174.
We have previously reported that insertion of coarse particles of beta-Quartz Glass Ceramic Insert (Megafiller) into a composite resin markedly reduced the polymerization shrinkage of resin restorative materials. In this study, we examined the effects of Megafiller insertion on wear resistance evaluated by the glass beads abrasion test, and the conventional toothbrushing abrasion test. The depth of wear was determined by measuring the thickness of the specimen before and after the wear tests using a profile projector accurate to 1 micron. In general, the depth of wear of the composites was reduced by Megafiller insertion, but the differences in the depth of wear between composites with and without the Megafiller were not significant except for a few materials. There were slight differences in the wetness of Megafiller in some composite resins.
我们之前曾报道，将β-石英玻璃陶瓷嵌体（Megafiller）的粗颗粒插入复合树脂中可显著降低树脂修复材料的聚合收缩率。在本研究中，我们通过玻璃珠磨损试验和传统牙刷磨损试验，研究了插入Megafiller对耐磨性的影响。磨损深度通过使用精度为1微米的轮廓投影仪测量磨损试验前后试样的厚度来确定。一般来说，插入Megafiller可降低复合材料的磨损深度，但除少数材料外，含Megafiller和不含Megafiller的复合材料在磨损深度上的差异并不显著。在一些复合树脂中，Megafiller的湿润度存在轻微差异。
