【摘要】 目的 探讨作为口腔诊疗用水的微酸性次氯酸水（SAHW）对牙本质全酸蚀粘接的影响，为其临床应用提供参考。方法 54颗人离体第三磨牙制备成牙本质平面标准试件。酸蚀后，分为蒸馏水冲洗的对照组，和有效氯浓度（FAC）为10 mg/L和40 mg/L SAHW冲洗牙本质30 s、1 min的4个实验组。冲洗后用全酸蚀粘接剂Single Bond2进行粘接，树脂充填后制备成试件进行微拉伸强度测试（μTBS)，电镜下观察测试后试件断裂模式。结果 对照组μTBS测试值为30 s组（30.02±7.79）MPa,1 min组（30.22±6.99） MPa;10 mg/L SAHW实验组的μTBS测试值为30 s组(29.80±6.80) MPa,1 min组（29.88±6.60）MPa;40 mg/L SAHW实验组的μTBS测试值为30 s组（29.71±7.47）MPa,1 min组（29.66±6.84）MPa。各组μTBS值差异无统计学意义（P> 0.05）。各组断裂模式均以混合断裂为主，断裂类型差异无统计学意义(P>0.05)。结论 SAHW的应用对牙本质全酸蚀粘接未显示不利影响。更多还原

【Abstract】 Objective To investigate the effect of slightly acid hypochloric water on the bond strength of toraletching dentin. Methods A total of 54 human third molars were prepared into dentin plane standard specimens. After acid erosion, the dentin was rinsed for 30 s and 1 min with distilled water(control group) and SAHW(experiment group) with available chlorine concentration(FAC) of 10 mg/L and 40 mg/L, respectively The whole acid etching adhesive Single Bond 2was used.The specimen was prepared for micro tensile strength test(μTBS), the fracture mode of the specimen was observed under electron microscope. Results μTBS of 30s group in control group was(30.02±7.79)MPa, and(30.22±6.99)MPa in 1 min group.μTBS of 30s group in 10 mg/L SAHW was(29.80±6.80)MPa, and(29.88±6.60) MPa in 1 min group. μTBS of 30 s group of 40 mg/L SAHW was(29.71±7.47)MPa, and(29.66±6.84) MPa in 1 min group. There was no significant difference in μTBS between the groups(P > 0.05). The fracture mode of each group was mainly mixed fracture, and there was no significant difference in fracture type(P > 0.05). Conclusions The application of SAHW has no adverse effect on the bond strength of the dentin total acid etching system.更多还原