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Comparison of canal transportation and centering ability of Twisted Files, HyFlex controlled memory, and Wave One using computed tomography scan: An study.使用计算机断层扫描对Twisted Files、HyFlex可控记忆锉和Wave One进行根管偏移及就位能力的比较：一项研究。
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本文引用的文献

1
Evaluation and comparison of biological cleaning efficacy of two endofiles and irrigants as judged by microbial quantification in primary teeth - an in vivo study.通过乳牙微生物定量评估和比较两种根管锉与冲洗剂的生物清洁效果——一项体内研究
Int J Clin Pediatr Dent. 2009 Sep;2(3):15-22. doi: 10.5005/jp-journals-10005-1013. Epub 2009 Dec 26.
2
Micro-computed tomography evaluation of the preparation of mesiobuccal root canals in maxillary first molars with Hyflex CM, Twisted Files, and K3 instruments.上颌第一磨牙近中颊根管预备的 Micro-computed tomography 评估：Hyflex CM、Twisted Files 和 K3 器械的比较。
J Endod. 2013 Mar;39(3):385-8. doi: 10.1016/j.joen.2012.11.030. Epub 2013 Jan 13.
3
Current challenges and concepts of the thermomechanical treatment of nickel-titanium instruments.镍钛器械热机械处理的当前挑战和概念。
J Endod. 2013 Feb;39(2):163-72. doi: 10.1016/j.joen.2012.11.005.
4
Bending properties of a new nickel-titanium alloy with a lower percent by weight of nickel.具有较低镍重量百分比的新型镍钛合金的弯曲性能。
J Endod. 2011 Sep;37(9):1293-5. doi: 10.1016/j.joen.2011.05.023. Epub 2011 Jul 16.
5
Comparison of canal transportation and changes in canal curvature of two nickel-titanium rotary instruments.两种镍钛旋转器械的根管输送能力和根管弯曲变化的比较。
J Endod. 2011 Sep;37(9):1290-2. doi: 10.1016/j.joen.2011.05.024. Epub 2011 Jul 13.
6
Fatigue testing of controlled memory wire nickel-titanium rotary instruments.控释记忆合金镍钛根管器械疲劳性能测试
J Endod. 2011 Jul;37(7):997-1001. doi: 10.1016/j.joen.2011.03.023. Epub 2011 May 12.
7
Mechanical properties of nickel-titanium rotary instruments produced with a new manufacturing technique.采用新工艺生产的镍钛旋转器械的机械性能。
Int Endod J. 2011 Apr;44(4):337-41. doi: 10.1111/j.1365-2591.2010.01835.x. Epub 2011 Jan 10.
8
Effects of raw material and rotational speed on the cyclic fatigue of ProFile Vortex rotary instruments.原材料和转速对 ProFile Vortex 旋转器械的循环疲劳的影响。
J Endod. 2010 Jul;36(7):1205-9. doi: 10.1016/j.joen.2010.02.015. Epub 2010 Mar 19.
9
Comparison of canal transportation and centering ability of twisted files, Pathfile-ProTaper system, and stainless steel hand K-files by using computed tomography.使用计算机断层扫描比较扭转文件、Pathfile-ProTaper 系统和不锈钢手用 K 锉的根管输送和定位能力。
J Endod. 2010 May;36(5):904-7. doi: 10.1016/j.joen.2009.12.038. Epub 2010 Mar 7.
10
An in vitro comparison of torsional stress and cyclic fatigue resistance of ProFile GT and ProFile GT Series X rotary nickel-titanium files.ProFile GT和ProFile GT X系列旋转镍钛锉的扭转应力与循环疲劳抗力的体外比较
J Endod. 2009 Mar;35(3):404-7. doi: 10.1016/j.joen.2008.12.003.

通过螺旋计算机断层扫描对两种旋转镍钛系统（Twisted Files和Hyflex锉）与传统不锈钢手动K型锉的根管偏移和就位能力进行体外评估。

An in-vitro Evaluation of canal transportation and centering ability of two rotary Nickel Titanium systems (Twisted Files and Hyflex files) with conventional stainless Steel hand K-flexofiles by using Spiral Computed Tomography.

作者信息

Kumar B Shiva, Pattanshetty Spoorti, Prasad Manju, Soni Sunny, Pattanshetty Kirti S, Prasad Shiva

机构信息

Department of Conservative Dentistry & Endodontics, D A P M R V Dental College, Bangalore, Karnataka, India.

出版信息

J Int Oral Health. 2013 Oct;5(5):108-15. Epub 2013 Oct 26.

PMID:24324313
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3845293/
Abstract

BACKGROUND

The purpose of this in-vitro study was to compare canal transportation and centering ability of Twisted and Hyflex Rotary Files with stainless steel hand k-flexofiles by using Spiral Computed Tomography.

MATERIALS & METHODS: A total of 90 freshly extracted human mandibular single rooted Premolar teeth were selected. The crowns were flattened with steel disks and a final dimension of 18-mm WL was achieved for each tooth. Canals were divided randomly into 3 groups of 30 teeth each. Group I:Hyflex files, Group II:Twisted files, Group III:stainless steel hand k-flexofiles. Three sections from apical, mid-root, and coronal levels of the canal were recorded. All the teeth were scanned before and after instrumentation by using Spiral Computed Tomography.

RESULTS

K-files showed highest transportation and less centered when compared to the Twisted and Hyflex rotary files. No significant difference was found between TF and Hyflex CM instruments.

CONCLUSION

TF and Hyflex files shaped curved root canals without significant shaping errors when compared to the Hand stainless steel k-flexofiles. How to cite this article: Kumar BS, Pattanshetty S, Prasad M, Soni S, Pattanshetty KS, Prasad S. An in-vitro Evaluation of canal transportation and centering ability of two rotary Nickel Titanium systems (Twisted Files and Hyflex files) with conventional stainless Steel hand K-flexofiles by using Spiral Computed Tomography. J Int Oral Health 2013;5(5):108-15.

摘要

背景

本体外研究的目的是通过螺旋计算机断层扫描比较Twisted旋转锉和Hyflex旋转锉与不锈钢手动k-flex锉的根管偏移和定心能力。

材料与方法

共选取90颗新鲜拔除的人下颌单根前磨牙。用钢盘将牙冠磨平，使每颗牙齿的工作长度最终达到18毫米。根管随机分为3组，每组30颗牙。第一组：Hyflex锉；第二组：Twisted锉；第三组：不锈钢手动k-flex锉。记录根管根尖、根中及冠部水平的三个截面。所有牙齿在器械预备前后均采用螺旋计算机断层扫描进行扫描。

结果

与Twisted旋转锉和Hyflex旋转锉相比，k锉显示出最高的根管偏移且定心能力较差。TF和Hyflex CM器械之间未发现显著差异。

结论

与手动不锈钢k-flex锉相比，TF和Hyflex锉在预备弯曲根管时无明显的预备误差。如何引用本文：Kumar BS, Pattanshetty S, Prasad M, Soni S, Pattanshetty KS, Prasad S. 利用螺旋计算机断层扫描对两种旋转镍钛系统（Twisted锉和Hyflex锉）与传统不锈钢手动K-flex锉的根管偏移和定心能力进行体外评估。《国际口腔健康杂志》2013年；5(5):108 - 15。