根管封闭剂iRoot SP和AH Plus与牙本质粘接强度的体外研究  

In Vitro Study of Root Canal Sealers iRoot SP and AH Plus on Adhesive Properties of Dentin

作　　者：任颖超 孔祥红 何苗苗 张梦雅 肖燕[1] REN Yingchao;KONG Xianghong;HE Miaomiao;ZHANG Mengya;XIAO Yan(Department of Stomatology,First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China)

机构地区：[1]郑州大学第一附属医院口腔医学中心,河南郑州450000

出　　处：《口腔医学研究》2022年第10期936-940,共5页Journal of Oral Science Research

基　　金：河南省科技攻关项目(编号:192102310079)。

摘　　要：目的:研究iRoot SP和AH Plus对根管内壁牙本质粘接强度的影响。方法:收集单根管牙60颗,随机分成iRoot SP和AH plus组(n=30),每组又随机分为3个小组并分别采用热牙胶法、单尖法、冷侧压法进行根管充填,1周后,将所有样本切成厚度1.00 mm的薄片,通过万能试验机计算推出强度,并用SPSS 22.0进行统计学分析,同时观察断裂方式并计算百分比。结果:iRoot SP和AH plus整体的粘接强度数值相近,差异无统计学意义(P>0.05);iRoot SP结合单尖法根尖区粘接强度最高(8.38±3.91)MPa,差异具有统计学意义(P<0.05)。各分组断裂方式占比大小均为:混合断裂>内聚断裂>界面断裂。结论:iRoot SP结合3种技术充填时均能达到相近甚至优于AH plus的粘接强度,以单尖法的根尖区粘接强度最高。断裂方式以混合断裂为主。Objective:To study the effect of iRoot SP and AH Plus on the bonding strength of root inner canal wall.Methods:Sixty single tube teeth were collected and randomly divided into iRoot SP and AH plus(n=30).Each group was randomly divided into 3 subgroups and filled by warm vertical technique,the single cone technique,and lateral condensation technique.After 1 week,all samples were cut into slices with 1 mm in thickness.The strength was calculated by universal test machine,and the fracture mode and the percentage were calculated.Results:iRoot SP and AH plus were similar and the difference was not significant(P>0.05).The highest value(8.38±3.91)MPa was in the apical region of iRoot SP(P<0.05).The proportion of fracture mode in each group was:mixed failure>cohesin failure>adhesion failure.Conclusion:iRoot SP can be similar or even better than AH plus,and the apical region has the highest bonding strength by the single cone method.The fracture mode is dominated by mixed failure.

关 键 词：iRoot SP AH Plus 粘接强度 根管充填技术 

分 类 号：R781.3[医药卫生—口腔医学]