Stackhouse J A, Kristol D S, Von Hagen S, Rao G
UMDNJ-N.J. Dental School, Department of Restorative Dentistry, Newark 07103.
J Biomed Mater Res. 1989 Jan;23(1):81-90. doi: 10.1002/jbm.820230107.
One aim of this in vitro investigation was to determine the effect of substituting four phenols and two methacrylates with vinyl functions on the dentin bond strengths of several new experimental dentin bonding agents. Another objective was to determine the effect of postextraction age and dentin level within the tooth on tensile bond strengths of these toluene diisocyanate-derived adhesives. Extracted third molars were divided into postextraction age groups and sectioned into three slices approximately 400 microns thick. The four substituted phenols were: eugenol, o-methoxyphenol, o-chlorophenol, and p-cresol. Substituted methacrylates with vinyl ligands were 2-hydroxyethyl methacrylate (HEMA) and 6-hydroxyhexyl methacrylate (HHMA). Results showed that adhesives made with o-chlorophenol, p-cresol, and methoxyphenol with HEMA were the best, while those made with eugenol and HHMA were the worst. The post extraction age of the tooth and the dentin depth had no consistent effect on most adhesive bond strengths which were generally around 10.3 MPa (1500 psi).
这项体外研究的一个目的是确定用具有乙烯基功能的四种酚类和两种甲基丙烯酸酯替代几种新型实验性牙本质粘结剂对牙本质粘结强度的影响。另一个目的是确定拔牙后的时间以及牙内牙本质水平对这些甲苯二异氰酸酯衍生粘合剂的拉伸粘结强度的影响。拔除的第三磨牙被分为拔牙后的不同时间组，并切成大约400微米厚的三片。四种取代酚为：丁香酚、邻甲氧基苯酚、邻氯苯酚和对甲酚。带有乙烯基配体的取代甲基丙烯酸酯为甲基丙烯酸2-羟乙酯（HEMA）和甲基丙烯酸6-羟己酯（HHMA）。结果表明，由邻氯苯酚、对甲酚和与HEMA的甲氧基苯酚制成的粘合剂效果最佳，而由丁香酚和HHMA制成的粘合剂效果最差。牙齿的拔牙后时间和牙本质深度对大多数粘结强度没有一致的影响，这些粘结强度通常约为10.3兆帕（1500磅力/平方英寸）。
