不同根管湿润度及充填方法对iRoot sp封闭性能的影响  

Effect of root canal wall moisture and filling techniques on the sealability of iRoot sp

作　　者：陈敏慜[1] 寇鹏 谢晓莉[1] 王祥柱[1] 侯冬兰 CHEN Min-min;KOU Peng;XIE Xiao-li;WANG Xiang-zhu;HOU Dong-lan(Department of Endodontics,Xiangya Stomatological Hospital,Central South University.Changsha 410078,Hunan Province;Department of Endodontics,Zhengzhou Stomatological Hospital.Zhengzhou 450000,Henan Province,China)

机构地区：[1]中南大学湘雅口腔医院牙体牙髓病科,湖南长沙410078 [2]郑州市口腔医院牙体牙髓病科,河南郑州450000

出　　处：《上海口腔医学》2018年第5期467-471,共5页Shanghai Journal of Stomatology

基　　金：湖南省科技厅科研基金资助项目(2014WK3026)

摘　　要：目的:评价根管湿润度及充填方法对i Root sp封闭性能的影响。方法:选取单直根管离体牙62颗,冠向下片法预备后,随机选择2颗,观察牙本质小管口开放程度。其余样本随机均分为A(完全湿润)、B(轻微湿润)、C(完全干燥)3组,每组按充填方法分为4个亚组,分别是a组(i Root sp纯糊剂充填法)、b组(i Root sp+单尖法)、c组(i Root sp+热牙胶垂直加压法)、d组(i Root sp+冷侧压法),按照分组进行干燥和充填。葡萄糖定量法检测各组根尖封闭性。采用SPSS 19.0软件对数据进行统计学分析。结果:A、B组在实验过程中分别表现出最大与最小的微渗漏,第28天时2组间差异有统计学意义(P<0.05)。相同根管湿润度下,第15天时,葡萄糖渗漏值Aa组显著大于Ab、Ac组(P<0.05);第21、28天时,Aa组显著大于Ab、Ac、Ad组(P<0.05)。结论:根管壁轻微湿润时i Root sp封闭性最佳。根管壁完全干燥或轻微湿润时,i Root sp纯糊剂充填法与i Root sp+牙胶充填法封闭性相似。PURPOSE： To study the effect of root canal wall moisture and filling techniques on the sealability of iRoot sp.METHODS： Sixty-two undamaged extracted human single-rooted teeth with fully developed apex were selected and prepared by crown-down technique. Two teeth were selected randomly to observe dentin tubules, opening, the residual teeth were randomly assigned to 3 groups： group A（wet）, group B（slightly moist）,group C（dry）.The roots were further divided into 4 subgroups, group a： iRoot sp sealer without a core material（bulk-fill）; group b： iRoot sp sealer with single cone obturation techniques; group c： iRoot sp sealer with heated gutta-purcha vertical pressure; group d： iRoot sp sealer with cold gutta-percha lateral compression technique. Glucose microleakage were measured in each group by glucose oxidase method. The differences in distribution of each group were analyzed with SPSS 19.0 software package. RESULTS：Group A and group B always showed the maximum and minimum amount of glucose penetration in the whole experimental process, and the difference was statistically significant at 28 d（P〈0.05）. Under the same degree of moisture of root canal wall, glucose leakage of subgroup Aa was significantly higher than that of subgroup Ab and Ac at 15 d; and significantly higher than Ab, Ac, Ad at 21 d and 28 d（P〈0.05）. In group B and C, the subgroups a, b, c, d had no significant difference from each other during the experimental process（P〈0.05）. CONCLUSIONS： iRoot sp sealer has the best sealing effect when root canals were slightly moist. When the root canal wall is completely dry or slightly moist, the sealability of iRoot sp bulk-fill is similar to that of iRoot sp sealer with gutta-percha filling technique.

关 键 词：iRoot SP 根管湿润度 微渗漏 充填技术 

分 类 号：R781.3[医药卫生—口腔医学]