酸蚀处理对新型自粘接树脂水门汀Clearfil SA Luting粘接性能影响的研究

目的：评价酸蚀处理对自粘结树脂水门汀Clearfil SA Luting与牙釉质和牙本质粘结强度的影响。方法：选取新鲜拔除的无龋坏人第三磨牙36个,制备近、远中牙釉质粘结面和颊侧牙本质粘结面,随机分为3组（n=12）,分别选用Clearfil SA Luting（SAC）、磷酸酸蚀配合Clearfil SA Luting进行粘结,测试两种处理方式对SAC与牙釉质、牙本质粘结强度的影响,同时与对照组Panavia F（PF）的粘接结果进行对照,并通过扫描电镜观察粘结界面。结果：牙釉质粘结强度测试结果显示,磷酸酸蚀配合SAC组（39.64±6.24）MPa显著高于未酸蚀组SAC（27.25±7.03）MPa组与对照组PF（22.92±7.13）MPa（P〈0.05）,但SAC未酸蚀组（27.25±7.03）MPa与对照组PF（22.92±7.13）MPa间无统计学差异（P〉0.05）。牙本质粘结强度测试结果显示,SAC未酸蚀组（10.09±3.26）MPa与PF对照组（14.23±6.39）MPa之间无显著性差异（P〉0.05）,但均显著高于SAC配合磷酸酸蚀组（1.13±1.12）MPa（P〈0.05）。结论：酸蚀处理可以显著提高自粘结树脂水门汀SAC与牙釉质粘结强度,但却降低了其与牙本质粘结效果。

Effect of acid etching on the bond strength of a new self-adhesive resin cement Clearfil SA Luting to enamel and dentin

Objective:To evaluate the effect of acid etching on the bond strength of a self-adhesive resin cement Clearfil SA Luting to both enamel and dentin and to compare the result with those of a self-etching bonding system Panavia F.Method:Flat buccal dentin surface slabs and mesial or distal enamel slabs were cut from 36 freshly extracted non-carious human third molars with diamond bur.All Specimens of both enamel and dentin were divided into 3 groups according to the treatment.Slabs were treated by Clearfil SA ...