临床口腔医学杂志2024，Vol.40Issue(5)：259-263,5.DOI:10.3969/j.issn.1003-1634.2024.05.002
三种连续旋转根管锉对重度弯曲根管预备能力的体外研究
An in vitro study of the ability of three continuously rotating root canal files to prepare severely curved root ca-nals
刘朝阳 1陈盼 2杨焰 2马净植2
作者信息
- 1. 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||荆州市中心医院口腔医学中心 湖北 荆州 434020
- 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
- 折叠
摘要
Abstract
Objective:To evaluate the root canal preparation ability of three continuous rotary systems using nickel-titanium instruments on resin simulated root canals by experienced and inexperienced operators.Methods:Thirty severely curved resin simulated root canals were randomly divided into groups A and B,and each group was further randomly divided into three subgroups(n= 5).Group A was prepared by an experienced operator using M3-L,ProTaper Next(PTN),and TruNatomy(TN),while an inexperienced operator prepared group B.Root canal preparation time,optical density(OD)of sus-pension fluid of apically extruded debris,and canal transportation were assessed to evaluate the preparation ability of the in-struments.Results:PTN had the longest preparation time(P<0.05),and inexperienced operators using PTN took significant-ly longer(P<0.05).All three nickel-titanium instruments resulted in debris extrusion(P<0.05),with M3-L showing the least debris extrusion(group A:P=0.202,group B:P=0.635).TN demonstrated the best centering ability,with no canal transportation observed at any level.However,at 7～9 mm from the apex,M3-L showed significantly more transportation than TN and PTN(P<0.05).In the PTN group,the inexperienced operator had significantly more transportation in the middle and apical segment(1～5 mm,7 mm)compared to the experienced operator(P<0.05).Conclusion:M3-L showed advantages in preparation time and apically extruded debris,while TN demonstrated the best centering ability.Experienced operators a-chieved better root canal preparation results with PTN.关键词
镍钛器械/连续旋转/弯曲根管/根管预备Key words
Nickel-titanium instruments/Continuous rotary movement/Curved root canals/Root canal preparation分类
医药卫生引用本文复制引用
刘朝阳,陈盼,杨焰,马净植..三种连续旋转根管锉对重度弯曲根管预备能力的体外研究[J].临床口腔医学杂志,2024,40(5):259-263,5.
