Torii Y, Itou K, Itota T, Hama K, Konishi N, Nagamine M, Inoue K
Department of Operative Dentistry, Okayama University Dental School, Japan.
Dent Mater J. 1999 Dec;18(4):453-61. doi: 10.4012/dmj.18.453.
We investigated the influence of filler content and gap dimension on the wear resistance of composite luting cement around CAD/CAM ceramic inlay restorations. Experimental hybrid dual-cured composite luting cements containing 60, 70, 72, 74 and 80 wt% of silanated barium-silica fillers were used for cementing CAD/CAM ceramic inlay into the cavity. The specimens involving inlay-cement-tooth interfaces were subjected to a three-body wear test. The relation between the interfacial gap dimension and wear loss was also investigated using 60, 70 and 80 wt% filled cements. The cements containing more than 70 wt% filler presented significantly higher wear resistance than 60 wt% filled cement. There was a positive linear relationship between gap dimension and wear loss, and the inclination of the regression line decreased with increasing filler content. These results indicated that the higher filler content of the cement increased the wear resistance and this desirable influence appeared more remarkably in the wider horizontal gap dimension.
我们研究了填料含量和间隙尺寸对CAD/CAM陶瓷嵌体修复体周围复合树脂粘结水门汀耐磨性的影响。实验用混合双固化复合树脂粘结水门汀，其中含有60%、70%、72%、74%和80%（重量）的硅烷化钡-二氧化硅填料，用于将CAD/CAM陶瓷嵌体粘结到窝洞中。对包含嵌体-水门汀-牙齿界面的样本进行三体磨损试验。还使用含60%、70%和80%（重量）填料的水门汀研究了界面间隙尺寸与磨损量之间的关系。填料含量超过70%（重量）的水门汀比含60%（重量）填料的水门汀具有显著更高的耐磨性。间隙尺寸与磨损量之间存在正线性关系，且回归线的斜率随填料含量的增加而减小。这些结果表明，水门汀中较高的填料含量提高了耐磨性，并且这种理想的影响在较宽的水平间隙尺寸中表现得更为明显。
