Chan K C
Department of Operative Dentistry, University of Iowa, College of Dentistry, Iowa City.
J Esthet Dent. 1991 Sep-Oct;3(5):187-9. doi: 10.1111/j.1708-8240.1991.tb00996.x.
This study investigated the microleakage between a composite resin restorative material and six basing materials. Cavities were prepared in polymerized composite resin samples and "restored" with Cavitec, Life, Ketac-Bond, BaseLine, Cavalite, and VLC Dycal. The samples were thermocycled and immersed in 0.05 percent crystal violet solution for 2 hours, then embedded in clear casting resin, sectioned and examined with an optical microscope. Our results indicated that Cavalite and VLC Dycal allowed no dye penetration. Cavitec and Life had a moderate degree of dye penetration and Ketac-Bond and BaseLine had a relatively high degree of penetration.
本研究调查了一种复合树脂修复材料与六种垫底材料之间的微渗漏情况。在聚合后的复合树脂样本中制备窝洞，并用Cavitec、Life、Ketac-Bond、BaseLine、Cavalite和VLC Dycal进行“修复”。样本经热循环处理后，浸入0.05%的结晶紫溶液中2小时，然后嵌入透明浇铸树脂中，切片并用光学显微镜检查。我们的结果表明，Cavalite和VLC Dycal没有染料渗透。Cavitec和Life有中度的染料渗透，而Ketac-Bond和BaseLine有较高程度的渗透。
