根管湿润性对四种根管糊剂封闭性能的影响  

The effects of dentin moisture condition on the closure property of four root canal sealants

作　　者：辛越 仇珺 张玉琳 孙湘钊 孙汉堂 

机构地区：[1]军事口腔医学国家重点实验室陕西省口腔医学重点实验室第四军医大学口腔医院牙体牙髓病科,陕西西安710032 [2]解放军第二〇三医院,黑龙江齐齐哈尔161000

出　　处：《牙体牙髓牙周病学杂志》2016年第4期236-239,共4页Chinese Journal of Conservative Dentistry

基　　金：国家自然科学基金(81070832);第四军医大学"青年英才支持计划"Ⅰ类项目

摘　　要：目的:评价不同根管湿润性对4种根管糊剂封闭性能的影响。方法:按纳入标准选用112个新鲜拔出的单根管恒牙,沿颈部截去牙冠,冠向下法预备根管。其中96个牙随机分为A(AH-plus糊剂)、M(MTA糊剂)、I(IRoot糊剂)、E(Endosequence糊剂)4个大组(n=24),每大组再随机分为D(Dry,根管完全干燥)、L(Less dry,根管部分干燥)、m(Moist,根管部分湿润)、W(Wet,根管完全湿润)4个亚组(n=6)。其余16个牙随机分为阳性、阴性对照组(n=8)。全部牙按各小组根管湿润性条件干燥后,即刻用各组对应的糊剂与大锥度牙胶配合进行根管热牙胶充填。染料渗入法测量充填7 d后根尖微渗漏的发生情况。结果:在完全干燥(D)条件下,A组染色线长度最小,与M、E组相比差异显著(P<0.05);在完全湿润(W)条件下,I组染色线长度最小,与A、M组相比差异显著(P<0.05)。结论:在根管湿润状态下,IRoot、Endosequence糊剂封闭性能优于AH-plus、MTA糊剂。AIM： To study the effects of dentin moisture condition on the closure property of 4 root canal sealants. METHODS： 112 freshly extracted permanent teeth with single root canal were included. After crown removal and root canal preparation,96 teeth were randomly divided into 4 groups（ n = 24） ： A（ AH- plus）,M（ MTA）,I（ IRoot） and E（ Endosequence）. And each group were further divided into 4 sub- groups： D（ Dry）,L（ Less dry）,m（ Moist） and W（ Wet）. The remaining 16 teeth were used as positive and negative controls respectively. The root canals were filled with corresponding sealants by warm gutta- percha after different drying procedures. Micro- leakage was assessed by ink staining 7 d after canal filling. RESULTS： The mean depth of ink dye penetration of AH-plus was the minimum under dry condition in contrast to MTA and Endosequence（ P 〈 0. 05）. The mean depth of ink dye penetration of IRoot was the minimum under wet condition in contrast to AH- plus and MTA（ P 〈 0. 05）. CONCLUSION：The closure property of IRoot and Endosequence is better than that of AH-plus and MTA under moist and wet root canal conditions.

关 键 词：根管湿润性 根管糊剂 微渗漏 

分 类 号：R783.1[医药卫生—口腔医学]