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据估计,有20%的恒牙有颈部侵蚀,为美观起见,常用牙色材料修复。树脂可和酸蚀的釉质机械粘接以减少微漏,但一直没有一种有效的方法用以封闭树脂/牙本质界面。现在,已有供复合树脂用的牙本质粘接剂,它可以改善修复体的边缘封闭。为了方便,医生常将一种牌号的粘接剂和另一牌号的复合树脂互用。本文通过体外实验,研究互换牙本质粘接剂和复合树脂对微漏的影响。这两种复合树脂/牙本质粘接剂体系是Valux/Scotchbond(美国3M)和Lumifor/G-luma(西德Bayer)。在40只无龋离体双尖牙的颊侧和舌侧作统一规格
It is estimated that 20% of permanent teeth have neck erosion, for aesthetic reasons, commonly used tooth color materials to repair. Resins can be mechanically bonded to etched enamel to reduce microleakage, but there is no effective way to seal the resin / dentin interface. Currently, dentin adhesives for composite resins are available, which improve the edge seal of the prosthesis. For convenience, doctors often use one grade of adhesive with another grade of composite resin. In this paper, in vitro experiments to study the exchange dentin adhesive and composite resin on the microleakage. The two composite resin / dentin adhesive systems are Valux / Scotchbond (3M, USA) and Lumifor / G-luma (Bayer, West Germany). Uniform specifications were made on the buccal and lingual sides of 40 caries-free bicuspid teeth