Saunders W P, Strang R, Ahmad I
Department of Conservative Dentistry, Glasgow Dental Hospital and School.
Am J Dent. 1991 Dec;4(6):265-7.
This study determined the shear bond strength of resin composite to bovine enamel etched with Mirage Bond primer containing 2.5% nitric acid. These results were compared with 37% orthophosphoric acid gel. In addition, the bond strength of resin composite to dentin was determined following treatment with the same primer. Resin composite was applied with and without an intermediary unfilled resin, and the specimens were stored for 1 week and then thermocycled prior to testing. The bond strength to enamel was substantially greater than to dentin (P less than 0.001). The results for enamel revealed that there was no significant difference between the etchant regimes (P greater than 0.05) but the intermediary resin significantly improved bond strengths (P less than 0.05). The presence of an intermediary resin also significantly improved the bond strength to dentin (P greater than 0.05).
本研究测定了树脂复合材料与用含2.5%硝酸的Mirage Bond底漆蚀刻的牛牙釉质之间的剪切粘结强度。将这些结果与37%正磷酸凝胶的结果进行比较。此外，在用相同底漆处理后，测定树脂复合材料与牙本质之间的粘结强度。施加树脂复合材料时有无中间未填充树脂，将标本储存1周，然后在测试前进行热循环。与牙本质相比，与牙釉质的粘结强度显著更高（P小于0.001）。牙釉质的结果显示，蚀刻方式之间无显著差异（P大于0.05），但中间树脂显著提高了粘结强度（P小于0.05）。中间树脂的存在也显著提高了与牙本质的粘结强度（P大于0.05）。
