Satou N, Khan A M, Satou K, Satou J, Shintani H, Wakasa K, Yamaki M
Department of Operative Dentistry, Hiroshima University, School of Dentistry, Japan.
J Oral Rehabil. 1992 Jan;19(1):31-7. doi: 10.1111/j.1365-2842.1992.tb01588.x.
The aim of this study was to evaluate in-vitro wear by two types of slurry of 10 commercial composite resin materials (seven hybrid and three microfilled composites). There was great variation in the in-vitro wear pattern by two types of slurry. The wear rate of microfilled composites was greater than that of hybrid composites, and a negative correlation was observed between wear rate and Knoop hardness values among all materials when hydroxyapatite slurry was used. In contrast, the wear rate of hybrid composites was greater than that of microfilled composites when abraded by green carborundum slurry. These abraded surfaces were compared with SEM micrographs of in-vivo composites surface after 4 years of service. The profile of in-vivo wear surfaces was found to be similar to that of in-vitro wear surfaces abraded with hydroxyapatite slurry.
本研究的目的是评估10种商用复合树脂材料（7种混合型和3种微填料型复合材料）的两种浆液在体外的磨损情况。两种浆液的体外磨损模式差异很大。微填料型复合材料的磨损率高于混合型复合材料，当使用羟基磷灰石浆液时，所有材料的磨损率与努氏硬度值之间呈负相关。相比之下，当用绿色碳化硅浆液磨损时，混合型复合材料的磨损率高于微填料型复合材料。将这些磨损表面与使用4年后体内复合材料表面的扫描电子显微镜照片进行比较。发现体内磨损表面的轮廓与用羟基磷灰石浆液磨损的体外磨损表面相似。
