Perdigao J, Swift E J, Cloe B C
Department of Operative Dentistry, University of Iowa, Iowa City 52242.
Am J Dent. 1993 Apr;6(2):61-4.
This in vitro study evaluated the effects of etchant type, surface moisture, and resin composite type on the shear bond strength of dentin adhesives. Three adhesives which bond to etched dentin were used in the study: All-Bond 2, Amalgambond, and Clearfil Photo Bond. Occlusal enamel was removed from 200 human molars to expose dentin. The dentin surfaces were etched, treated with a dentin adhesive system, and bonded with resin composite. After thermocycling and storage, the composite columns were fractured from dentin using an Instron machine. Bond strengths were calculated and subjected to a statistical analysis. Etchant type, surface moisture, and resin composite type all had significant effects on dentin bond strengths. Overall, the highest bond strengths were obtained with 10/3 etchant, moist dentin, and hybrid composite. The highest bond strengths for All-Bond 2 and Amalgambond were obtained by using the manufacturer's recommended etchant, moist dentin, and a hybrid composite. The mean bond strengths for All-Bond and Amalgambond under these conditions were 22.5 and 19.0 MPa, respectively. Clearfil Photo Bond had significantly lower bond strengths, but was relatively unaffected by changes in experimental conditions.
这项体外研究评估了酸蚀剂类型、表面湿度和树脂复合材料类型对牙本质黏结剂剪切黏结强度的影响。该研究使用了三种与酸蚀牙本质黏结的黏结剂：全粘结2号（All-Bond 2）、银汞粘结剂（Amalgambond）和光固化复合树脂粘结剂（Clearfil Photo Bond）。从200颗人类磨牙上去除咬合面釉质以暴露牙本质。对牙本质表面进行酸蚀处理，用牙本质黏结系统进行处理，然后与树脂复合材料粘结。经过热循环和储存后，使用英斯特朗材料试验机将复合柱从牙本质上折断。计算黏结强度并进行统计分析。酸蚀剂类型、表面湿度和树脂复合材料类型均对牙本质黏结强度有显著影响。总体而言，使用10/3酸蚀剂、湿润牙本质和混合复合材料时可获得最高的黏结强度。全粘结2号和银汞粘结剂在使用制造商推荐的酸蚀剂、湿润牙本质和混合复合材料时可获得最高的黏结强度。在这些条件下，全粘结2号和银汞粘结剂的平均黏结强度分别为22.5 MPa和19.0 MPa。光固化复合树脂粘结剂的黏结强度明显较低，但相对不受实验条件变化的影响。
