Worm D A, Meiers J C
Naval Dental School, Bethesda, Maryland 20889-5602, USA.
Quintessence Int. 1996 Apr;27(4):271-7.
Beta-quartz glass-ceramic inserts are a recent attempt to counteract some of the detrimental mechanical properties of resin composites by decreasing polymerization shrinkage and increasing wear resistance. The purpose of this study was to evaluate how manipulation, contamination, and disinfection would affect the resin composite-beta-quartz insert interface, as determined by microleakage. Seven groups (n = 10) of Class V cavity preparations were placed in extracted human molar teeth and restored with a microfilled resin composite and beta-quartz insert. In six groups, contamination or disinfection--latex glove, bare finger, human saliva, 95% ethanol, or LpHse disinfectant--was applied to the insert prior to placement. Latex gloves, bare fingers, and saliva were found to have a detrimental effect on the insert-resin composite interface that could compromise the longevity of the restoration.
β-石英微晶玻璃嵌体是最近为抵消树脂复合材料的一些有害机械性能而进行的尝试，方法是减少聚合收缩并提高耐磨性。本研究的目的是评估操作、污染和消毒如何通过微渗漏来影响树脂复合材料与β-石英嵌体的界面。将七组（n = 10）V类洞预备体置于拔除的人磨牙中，并用微填料树脂复合材料和β-石英嵌体进行修复。在六组中，在放置嵌体之前，将污染或消毒剂——乳胶手套、裸手指、人唾液、95%乙醇或LpHse消毒剂——应用于嵌体。结果发现，乳胶手套、裸手指和唾液对嵌体-树脂复合材料界面有不利影响，可能会损害修复体的使用寿命。
