三种往复旋转单支镍钛器械预备模拟弯曲根管的效果比较

发布时间：2018-07-17 15:58

【摘要】：目的:比较3种往复旋转单支镍钛器械预备模拟弯曲根管的切割能力和成形能力,为其临床应用提供参考。方法:选取30个单弯树脂模拟根管,随机分成三组:Reciproc组,One file组,Wave One组。按厂家提供的说明预备模拟根管,记录预备时间、预备前后每个模块质量的差值;获得模块预备前后的根管图像并利用Photoshop和Image Pro Plus测量其弯曲角度的变化;以及测量从距离根尖孔1mm处开始到距离根尖孔10mm处,每增加1mm其根管内外壁树脂去除量的差值,从而得出镍钛器械的中心定位能力。最终数据将使用单因素方差分析进行统计学分析。结果:1)Wave One组的预备时间较其他2组长(P0.05);2)3组镍钛器械预备前后模拟根管的质量差比较差异,无统计学意义(P0.05);3)3组镍钛器械预备前后对于模拟根管的弯曲角度改变比较差异,无明显统计学意义(P0.05);4)距离根尖孔5mm处,Reciproc组和One file组的中心定位能力优于Wave One组(P0.05),在距离根尖孔6、7mm处,One file组的中心定位能力优于其他2组(P0.05)。结论:三种往复旋转镍钛器械均有较好的切削能力,其中Reciproc和One file预备根管的效率高于Wave One;三种器械均可较好的保持模拟根管的原始形态,其中One file在根管中段的中心定位能力优于其他2组。
[Abstract]:Objective: To compare the cutting ability and forming ability of 3 kinds of rotary single branch nickel titanium instruments to simulate the cutting of curved root canal, and to provide reference for its clinical application. Method: select 30 single curved resin simulated root canals and randomly divide into three groups: Reciproc group, One file group and Wave One group. The difference in the mass of each module before and after, obtained the root canal image before and after the module preparation, and measured the change of the bending angle by Photoshop and Image Pro Plus; and measured the difference between the internal and external wall resin removal of the root canal from 1mm from the distance root tip to the 10mm of the root apex hole, thus obtaining the central determination of the nickel titanium instrument. The final data will be analyzed statistically with single factor analysis of variance. Results: 1) the preparation time of Wave One group is longer than that of the other 2 groups (P0.05); 2) the difference in the quality of the simulated root canal before and after the preparation of the 3 sets of nickel titanium instruments is not significant (P0.05); 3) the ratio of the bending angle of the simulated root canal before and after the 3 sets of nickel titanium instruments is changed. There was no significant statistical significance (P0.05) (P0.05); 4) the central positioning ability of group Reciproc and One file was better than that of Wave One group (P0.05) from the root apex hole 5mm. The central positioning ability of the One file group was better than the other 2 groups (P0.05) at the distance from the root tip hole. Conclusion: the three kinds of reciprocating rotary nickel titanium instruments have better cutting ability. The efficiency of the root canal preparation and One file was higher than that of Wave One; the three instruments could better maintain the original morphology of the simulated root canal, and the central positioning ability of One file in the middle part of the root canal was better than that of the other 2 groups.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R781.05

【相似文献】