两种单支锉系统预备模拟弯曲单根管效果的比较研究OACSTPCD
Comparative study on the preparation effect with two types of single formed rotary systems in simulated singel curved root canals
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 divid-ed 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 quali-ty 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 differ-ence 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).Conclu-sion:In the resin models the two instruments keep the original canal curvature well.The central positioning ability of root ca-nal preparation by M3-L and HyFlex-EDM single formed rotary systems were equally in simulated curved root canals.
余洋;孙琴
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
口腔医学
根管预备根管偏移中心定位能力M3-LHyFlex-EDM
Root canal preparationRoot canal deviationCentral positioning abilityM3-LHyFlex-EDM
《临床口腔医学杂志》 2024 (003)
160-163 / 4
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