Lucena-Martin C, González-Rodríguez M P, Ferrer-Luque C M, Robles-Gijón V, Navajas J M
University of Granada, Faculty of Dentistry, Department of Pathology and Dental Therapeutic, Spain.
Oper Dent. 1999 Mar-Apr;24(2):73-80.
Recently, several adhesive systems have been introduced that combine the primer and bonding resin in a single bottle. The purpose of this study was to evaluate the bonding efficiency of these one-component adhesives under conditions of simulated pulpal pressure and to determine the influence of storage time on the shear bond strength. One hundred caries-free human molars were embedded with epoxy resin in cylindrical rubber molds. Flat dentin surfaces at a level 1 mm above the pulpal chamber were obtained and used as the region for bonding. The specimens were randomly assigned to five groups (n = 20): (1) Syntac Single, (2) Prime & Bond 2.0, (3) One Step, (4) Single Bond, and (5) OptiBond Solo. Each bonding system was combined with the same composite resin (Herculite XRV). After resin polymerization, half of the samples from each group were tested at 1 week and the other half at 4 weeks. During the bonding procedure and storage time a pulpal pressure of 20 cm of serum was applied. Analysis of the data by one-way ANOVA testing showed that the shear bond strengths were significantly different (P < 0.001). OptiBond Solo and Single Bond presented the best results. As the storage time increased there was a significant decrease in the shear bond strength for all the adhesive systems used.
最近，已经推出了几种将底漆和粘结树脂组合在一个瓶子中的粘结系统。本研究的目的是评估这些单组分粘结剂在模拟牙髓压力条件下的粘结效率，并确定储存时间对剪切粘结强度的影响。将100颗无龋的人磨牙用环氧树脂嵌入圆柱形橡胶模具中。在髓腔上方1mm处获得平坦的牙本质表面，并用作粘结区域。将标本随机分为五组（n = 20）：（1）Syntac Single，（2）Prime & Bond 2.0，（3）One Step，（4）Single Bond，和（5）OptiBond Solo。每种粘结系统都与相同的复合树脂（Herculite XRV）结合使用。树脂聚合后，每组一半的样品在1周时进行测试，另一半在4周时进行测试。在粘结过程和储存期间，施加20cm血清的牙髓压力。通过单向方差分析测试对数据进行分析表明，剪切粘结强度存在显著差异（P <0.001）。OptiBond Solo和Single Bond表现出最好的结果。随着储存时间的增加，所有使用的粘结系统的剪切粘结强度都显著降低。
