Chan K C, Denehy G E, Swift E J
College of Dentistry, University of Iowa, Iowa City.
J Esthet Dent. 1990 Nov-Dec;2(6):159-61. doi: 10.1111/j.1708-8240.1990.tb00637.x.
The purpose of this study was to evaluate the ability of seven dentin bonding agents to reduce dye penetration at the margins of microfill composite restorations in dentinal cavities. Forty extracted molars were selected and cleaned. Cavity preparations were made in dentin with #55 carbide burs. The preparations were restored with Silux after application of one of the following dentin bonding agents: Gluma, Scotchbond 2, Tenure, Prisma Universal Bond 2, Mirage-Bond, XR Bond, and All-Bond. Samples were thermocycled for 200 cycles between 3 degrees C and 60 degrees C, then immersed in a 0.05 percent crystal violet solution for 2 hours. The samples were embedded in clear casting resin, sectioned, and examined with a light microscope. Our results indicated that the dentin bonding systems reduced, but failed to totally eliminate, microleakage around the composite resin restorations.
本研究的目的是评估七种牙本质粘结剂减少微填料复合树脂修复体在牙本质龋洞边缘染料渗透的能力。选择40颗拔除的磨牙并进行清洁。用#55硬质合金车针在牙本质上制备洞形。在应用以下一种牙本质粘结剂后，用Silux修复制备的洞形：Gluma、Scotchbond 2、Tenure、Prisma Universal Bond 2、Mirage-Bond、XR Bond和All-Bond。样本在3℃至60℃之间进行200次热循环，然后浸入0.05%的结晶紫溶液中2小时。将样本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，牙本质粘结系统减少了复合树脂修复体周围的微渗漏，但未能完全消除。
