TEM下自酸蚀粘结剂的两种模式牙本质纳米渗漏观察  

Two Models of Nanoleakage Expression in the Self-etching Adhesives

作　　者：赵三军[1] 陈吉华[1] 熊宇[1] 方明[1] 

机构地区：[1]第四军医大学口腔医学院修复科,陕西西安710032

出　　处：《口腔医学研究》2005年第2期123-126,共4页Journal of Oral Science Research

基　　金：国家自然科学基金资助项目 (编号:30371556 /C03031103)

摘　　要：目的:观察并评价3种自酸蚀粘结剂(ClearfilTM SEBond、AdperTM PromptTM、PANAVIATM F)牙本质粘结界面的纳米渗漏。方法:选取12颗无龋坏人磨牙,用600目碳化硅砂纸在流水冲洗下预备出统一的牙本质粘结面玷污层。分别用3种自酸蚀粘结剂按使用说明进行粘结处理。每颗牙齿垂直于粘结面切割出5个0. 9mm厚粘结试件,分别避光贮存于硝酸银、氨化硝酸银溶液中24h,在TEM下观察牙本质粘结界面纳米渗漏。结果:在TEM下观察到3种自酸蚀粘结剂牙本质粘结界面混合层中呈网状、点状两种模式分布的纳米渗漏。结论:自酸蚀粘结剂由于其自身的组份特性,牙本质粘结界面均存在不同程度的纳米渗漏。Objective: The purpose of this study was to evaluate the dentin nanoleakage in the 3 self-etching adhesives (Clearfil TM SE Bond, Adper TM Prompt TM , PANAVIA TM F). Methods: Superficial occlusal dentin of 12 molars extracted freshly was finished with 600-grit SiC paper under running water. 3 self-etching adhesives were applied to dentin surfaces according to the manufacturers' instructions. The bonded teeth were sectioned occluso-gingivally into 0.9-mm-thick serial slabs which were stored in silver nitrate group or ammoniacal silver nitrate group in the dark for 24 h and prepared for transmission electron microscope. Rusults: With conventional silver nitrate and ammoniacal silver nitrate, the reticular and spotted pattern modes of nanoleakage were observed within thybrid layers of resin-dentin interfaces bonded with 3 self-etching adhesives under TEM. Conclusion: The nanoleakage expression of resin-dentin interfaces was all observed diversely in the self-etching adhesives because of their properties of composition.

关 键 词：自酸蚀 纳米渗漏 TEM 

分 类 号：R783.1[医药卫生—口腔医学]