临床口腔医学杂志Issue(1)：9-11,12,4.DOI:10.3969/j.issn.1003-1634.2015.01.004
二硅酸锂和白榴石基玻璃陶瓷在模拟咀嚼循环下的耐磨性研究
Abrasive resistance of lithium disilicate glass-ceramic and leucite reinforced glass-ceramic
摘要
Abstract
Objective:To compare wear properties of leucite glass-ceramic and lithium disilicate glass-ceramic from the perspective of time-varying wear behavior. Method:Leucite reinforced glass-ceramic (IPS Empress Esthetic ETC1)and lithium disilicate glass-ceramic (IPS e.max Press HT) specimens were made by heat-pressed technology. The antagonist of steatite was subjected to the wear test method(a vertical force of 10N, one million cycles). The wear volume was mearsured by a three-dimensional profiler per 100,000 cycles,with SEM observing surface topography. Result:At 100,000 cycles vol-ume loss of leucite reinforced glass ceramic was more than lithium disilicate ceramic ,and there is no difference between the two ceramics after 200,000 cycles. At initial stage,leucite reinforced glass-ceramic showed the morphology of furrows and debris and lithium disilicate glass-ceramic demonstrated deep and wide furrows. With the evolution of time ,furrows of su-perficial and dense,the surface tends to be smooth. Conclusion:At initial stage,leucite reinforced glass-ceramic wore more than lithium disilicate glass-ceramic. However,there was no significant difference between the two heat-pressed glass ce-ramic at later stage.关键词
牙瓷料/牙修复磨损/显微镜检查,电子,扫描Key words
dental Porcelain/dental restoration wear/microscopy/electrochemical/scanning分类
医药卫生引用本文复制引用
张珍珍,张少锋,郭嘉文,王琪,伊远平..二硅酸锂和白榴石基玻璃陶瓷在模拟咀嚼循环下的耐磨性研究[J].临床口腔医学杂志,2015,(1):9-11,12,4.基金项目
国家自然科学基金 （）
