A new method for the evaluation of the wear of restorative materials on Class V cavity.
A new method for the evaluation of the wear of restorative materials on Class V cavity.
复制标题
评估V类牙洞修复材料磨损的新方法
DOI：
10.4012/dmj.7.206
复制
发表时间：
1988
影响因子：
2.5
通讯作者：
Y. Imai
中科院分区：
文献类型：
--
作者：
W. Rou;P. Chang;Y. Imai
采用一种新型的体外刷牙方法，对V类牙槽内修复材料的磨损程度进行了评价。结果与临床表现吻合良好。常规复合树脂的耐磨性高于釉质表面，而玻璃离子水门合剂和光固化复合树脂（BF）的耐磨性与釉质表面相当。虽然4-META/MMA (S)的耐磨性较低，但含有二甲基丙烯酸酯的pmma -丙烯酸树脂的耐磨性有所提高。S和PA样品的耐磨性与C、PC和I样品的耐磨性相当，相当于两年的口腔内刷牙30min。从扫描电镜照片来看，经过30min的涂刷后，所有复合树脂表面都比未填充树脂表面明显粗糙。从美学的角度来看，未填充树脂在V类修复中可能值得重新考虑。
The wear level of restorative materials in class V cavities was evaluated by a new in vitro method using a tooth brushing apparatus. The result corresponded well with clinical findings. The conventional composite resin showed a higher abrasive resistance than the enamel surface, while the glass ionomer cement and light cure composite (BF) showed an abrasive resistance equal to the enamel surface. Though the wear resistance of 4-META/MMA (S) was low, the PMMA-acrylic resin containing dimethacrylate showed an improved wear resistance. The wear resistance of S and PA samples after 30min brushing which equal to two years of intraoral tooth brushing showed comparable wear resistance to C, PC and I samples'. From the SEM photographs, all the composite resin surface showed obviously rough surfaces compared to unfilled resins after 30min of brushing. Unfilled resin may be worth being reconsidered in class V restorations from an esthetic point of view.