Wang L, Sakai V T, Kawai E S, Buzalaf M A R, Atta M T
Department of Operative Dentistry, University North of Paraná- UNOPAR, Londrina, Brazil.
J Oral Rehabil. 2006 Feb;33(2):110-6. doi: 10.1111/j.1365-2842.2006.01536.x.
The bonding of resin-modified glass ionomer cements to dentin remains a challenge in clinical routine. In an attempt to improve this property, different materials and techniques have been proposed. This study investigated the shear bond strength of resin-modified glass ionomer cements (Vitremer, 3M/ESPE and Fuji II LC Improved, GC) to human dentin using two one-bottle adhesive systems (Prime & Bond 2.1, Dentsply and Single Bond, 3M/ESPE). The restored specimens were stored in deionized water for 24 h at 37 +/- 1 degrees C, and then the bonded surfaces were tested in shear strength using a Universal testing machine at a crosshead speed of 0.5 mm min(-1). Bond strength means were recorded and failure modes were assessed with a stereomicroscope at 40x magnification. Data were submitted to two-way anova and multiple comparisons were performed using a Tukey statistical test (P < 0.05). Fuji II LC Improved yielded higher bond strength (P < 0.05) than Vitremer in all experimental conditions. No statistically significant differences (P > 0.05) were observed among the proposed dentin surface treatments, although a slight decrease in bond strength was observed when phosphoric acid was used alone. Bond strengths of the resin-modified glass ionomer cements to dentin seemed to be more material-dependent than surface treatment-dependent. It may be concluded that the one-bottle adhesive systems tested in this study did not improve the bond strength of the resin-modified glass ionomer cements to dentin.
在临床实践中，树脂改性玻璃离子水门汀与牙本质的粘结仍然是一项具有挑战性的工作。为了改善这一性能，人们提出了不同的材料和技术。本研究使用两种单瓶粘结系统（Prime & Bond 2.1，登士柏公司；以及Single Bond，3M/ESPE公司），研究了树脂改性玻璃离子水门汀（Vitremer，3M/ESPE公司；以及Fuji II LC Improved，GC公司）与人类牙本质之间的剪切粘结强度。修复后的标本在37±1℃的去离子水中储存24小时，然后使用万能试验机以0.5毫米/分钟（-1）的十字头速度对粘结表面进行剪切强度测试。记录粘结强度平均值，并使用40倍放大率的体视显微镜评估失效模式。数据进行双向方差分析，并使用Tukey统计检验进行多重比较（P<0.05）。在所有实验条件下，Fuji II LC Improved的粘结强度均高于Vitremer（P<0.05）。在所提出的牙本质表面处理方法之间未观察到统计学上的显著差异（P>0.05），尽管单独使用磷酸时粘结强度略有下降。树脂改性玻璃离子水门汀与牙本质的粘结强度似乎更多地取决于材料而非表面处理。可以得出结论，本研究中测试的单瓶粘结系统并未提高树脂改性玻璃离子水门汀与牙本质的粘结强度。
