两种单支锉系统预备模拟弯曲单根管效果的比较研究  

Comparative study on the preparation effect with two types of single formed rotary systems in simulated singel curved root canals

作　　者：余洋[1] 孙琴 YU Yang;SUN Qin(Hefei Stomatological Hospital,Hefei Clinical College of Stomatology,Anhui Medical University,Anhui Hefei 230000,China;Department of Stomatology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Hubei Wuhan 430030,China)

机构地区：[1]合肥市口腔医院安徽医科大学合肥口腔临床学院,安徽合肥230000 [2]华中科技大学同济医学院附属同济医院口腔医学中心,湖北武汉430030

出　　处：《临床口腔医学杂志》2024年第3期160-163,共4页Journal of Clinical Stomatology

摘　　要：目的:比较M3-L和HyFlex-EDM单支锉系统预备树脂模拟弯曲单根管的成形效果。方法:选取40颗树脂模拟弯曲单根管,随机分为两组,每组20颗,分别用M3-L和HyFlex-EDM机用镍钛锉进行根管预备,牙科显微镜摄录预备前后根管图像,测算模拟根管质量差和工作长度变化、计量偏移量大小。结果:M3-L组预备后根管工作长度为(15.654±0.004)mm,HyFlex-EDM组工作长度为(15.662±0.001)mm,差异无统计学意义(P>0.05);两组树脂模拟根管预备后质量差和各个位点根管偏移量的比较,差异均无统计学意义(P>0.05)。结论:M3-L和HyFlex-EDM单支锉系统预备模拟弯曲单根管皆能维持根管固有形态和走向,具备良好的中心定位能力。Objective:To compare the shaping effect of preparation with M3-L and HyFlex-EDM single formed rotary systems in resin simulated single curved root canals.Methods:Forty simulated single curved root canals were randomly divided into two groups(n=20).Root canal preparation was performed with M3-L and HyFlex-EDM nickel-titanium files.Before and after root canal preparation images were taken by a dental surgery microscope.Measurement of simulated root canal quality and variations in working length.Root canal deviation was calculated.Results:The working length of the root canal after root canal preparation in the M3-L group was(15.654±0.004)mm,(15.662±0.001)mm for HyFlex-EDM group.The difference was not statistically significant(P>0.05).The quality and root canal deviation of the resin simulated root canals at all sites after preparation were not statistically significant difference between M3-L and HyFlex-EDM group(P>0.05).Conclusion:In the resin models the two instruments keep the original canal curvature well.The central positioning ability of root canal preparation by M3-L and HyFlex-EDM single formed rotary systems were equally in simulated curved root canals.

关 键 词：根管预备 根管偏移 中心定位能力 M3-L HyFlex-EDM 

分 类 号：R781.05[医药卫生—口腔医学]