Davila J M, Gwinnett A J, Robles J C
Department of Pediatric Dentistry, Eastman Dental Center, Rochester, NY.
ASDC J Dent Child. 1988 Jan-Feb;55(1):25-8.
The purpose of this in vitro study was to determine the bonding qualities of three commercially available dentin bonding agents, namely Dentin Adhesit/Heliomolar, Creation Bond/Visar Fil and Scotchbond/P30. Microleakage tests and a scanning electron microscopy study of the interface between dentin and resin were performed. In eighteen specimens, the penetration of 0.5 percent basic fuchsin solution was studied across the enamel and dentin interfaces with the resin. Half of the specimens in each group of products were thermocycled. Leakage was evaluated after sectioning under a light optical stereomicroscope at 20 x magnification, using a classification reported by Eriksen and Buonocore. The interface between the restorative resin and the dentin axial walls of the preparation and its floor were examined by scanning electron microscopy (SEM). The results showed that leakage was commonly found at the resin/dentin interface and SEM showed gaps between the restoration and walls and floor of the preparation. It was concluded that the dentin bonding agents failed to provide a bond between restorative resin and dental tissue.
本体外研究的目的是确定三种市售牙本质粘结剂，即牙本质粘结剂/光固化复合树脂、创可贴粘结剂/维他光固化复合树脂和3M Scotchbond/P30的粘结质量。进行了微渗漏试验以及牙本质与树脂界面的扫描电子显微镜研究。在18个标本中，研究了0.5%碱性品红溶液透过树脂在釉质和牙本质界面的渗透情况。每组产品中的一半标本进行了热循环处理。在20倍放大率的光学立体显微镜下切片后，使用埃里克森和布奥诺科尔报道的分类方法评估渗漏情况。通过扫描电子显微镜（SEM）检查修复性树脂与制备体的牙本质轴向壁及其底部之间的界面。结果表明，在树脂/牙本质界面普遍发现渗漏，SEM显示修复体与制备体的壁和底部之间存在间隙。得出的结论是，牙本质粘结剂未能在修复性树脂与牙体组织之间形成粘结。
