根管内屏障对根管治疗牙冠方微渗漏影响的体外研究  

In vitro study of influence of intraorifice barriers on coronal microleakage of endodontically treated teeth

作　　者：杨金玲[1,2] 高燕[1] 庄沛林[1] 吕陶红[1] 

机构地区：[1]中山大学光华口腔医学院.口腔医学研究所,广州510080 [2]河北医科大学第三医院口腔科

出　　处：《实用口腔医学杂志》2011年第1期131-133,共3页Journal of Practical Stomatology

基　　金：2007-2009年度卫生部部属(管)医院临床学科重点项目(编号:卫规财函2007353)

摘　　要：完整单根管前磨牙42颗,截去牙冠,常规根管治疗,随机分为4组,2%亚甲基蓝染色,2周后取出,制作透明样本,体视显微镜观察并测量样本微渗漏长度,并对数据进行统计学分析。结果显示阴性对照组未见染料渗入根管,阳性对照组见整个根管被染色(单因素方差分析,P<0.001),微渗漏长度的均数和置信区间由GP(4.80±0.54,4.42～5.19)、ZPC(3.39±0.65,2.92～3.85)、Filtek Z350(2.07±0.27,1.87～2.27)至Fiju VⅡ(1.68±0.15和1.57～1.79)呈递减趋势,两两比较,除Filtek Z350与F ijuVII间差异无统计学意义外(P>0.05),其余各组间差异均有统计学意义(P<0.05)。说明根管内屏障能够提高根管治疗牙冠方封闭能力;Filtek Z350、Fuji VⅡ可作为根管内屏障材料应用于临床。42 single root canal premolars were collected.The crowns were removed and the teeth were treated by root canal therapy routinely.Then samples were randomly divided into 4 groups.Specimens were stained with 2% methylene blue,and translucent specimens were made after two weeks.Microleakage was observed under stereomicroscope and the length of largest microleakage were measured.The roots in the negtive control group were not stained,while the roots in positive control group was totally stained（Single-factor analysis of variance,P0.001）.The mean±standard deviation and 95% confidence interval for mean of the length of microleakage were decreased gradually from GP（4.80±0.54,4.42~5.19）,ZPC（3.39±0.65,2.92~3.85）,Filtek Z350（2.07±0.27,1.87~2.27） to Fiju VII（1.68±0.15,1.57~1.79）.And there was no significant difference between the groups of Filtek Z350 and Fiju VII（P0.05）,however,there was significant difference between any other two groups（P0.05）.The study showed that intraorifice barriers can improve the ability of coronal sealing of endodontically treated teeth.Filtek Z350 and Fuji VII were proper materials as intraorifice barriers.

关 键 词：冠方屏障 根管内屏障 流体树脂 树脂加强型玻璃离子水门汀 

分 类 号：R783[医药卫生—口腔医学]