Factors effecting dental composite wear in vitro
Factors effecting dental composite wear in vitro
复制标题
DOI：
10.1002/(sici)1097-4636(199724)38:4
复制
发表时间：
1997-12-01
期刊：
影响因子：
--
通讯作者：
Ferracane, JL
中科院分区：
文献类型：
--
作者：
Condon, JR;Ferracane, JL
后牙复合材料的磨损是通过复杂的磨损机制组合发生的。为了以受控方式隔离和测量不同摩擦学现象的贡献，采用了口腔磨损模拟器。先前报告的结果表明，模拟器能够与磨损和磨耗的临床结果形成强相关性。这些结果是用被配置为模拟咀嚼动力学的装置产生的，特别是采用人牙釉质触针、生理负荷水平和用于第三身体的食物状浆料。在这项研究中，浆料被替换为水，以检查第三体在产生磨损中的作用。第三体被发现可以减少大多数材料的磨损。在一个单独的测试中，牙釉质探针尖端被滑石取代，滑石是一种半多孔陶瓷，当与牙科复合材料相对时，其磨损特性与牙釉质相似。滑石拮抗剂的使用增加了较大颗粒填充材料的磨损。粘着磨损机制被认为是牙科复合材料磨损的一个促成因素。(C)1997年John Wiley & Sons，Inc.
The wear of posterior dental composite restorations takes place through a complex combination of wear mechanisms. To isolate and measure the contribution of the different tribological phenomena in a controlled manner, an oral wear simulator was employed. Results previously reported demonstrated the simulator's ability to form strong correlations with clinical results for both abrasion and attrition wear. These results were generated with the device configured to mimic masticatory dynamics, specifically employing a human enamel stylus, physiologic load levels, and a foodlike slurry for a third body. In this study the slurry was replaced with water to examine the role of the third body in producing abrasion. The third body was found to reduce wear for most materials. In a separate test the enamel stylus tip was replaced with steatite, a semiporous ceramic with wear characteristics similar to enamel when opposing dental composite. The use of a steatite antagonist increased abrasion for the larger particle filled materials. The adhesive wear mechanism was found to be a contributing factor in dental composite wear. (C) 1997 John Wiley & Sons, Inc.