不同根管治疗镍钛旋转器械的循环疲劳抗力分析：一项研究。
Analysis of cyclic fatigue resistance of different endodontic nickel-titanium rotary instruments: An study.
作者信息
Langaliya Akshayraj, Patel Neeta, Pallipurath Athulya, Parmar Girish, Kothari Anjali, Jhala Kairavi
机构信息
Department of Conservative Dentistry and Endodontics, AMC Dental College and Hospital, Ahmedabad, Gujarat, India.
Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, Ahmedabad, Gujarat, India.
出版信息
J Conserv Dent Endod. 2024 Jan;27(1):95-99. doi: 10.4103/JCDE.JCDE_204_23. Epub 2024 Jan 13.
AIMS
The aim of this study was to compare the cyclic fatigue resistance of three different endodontic nickel-titanium rotary instruments using a dynamic testing device.
MATERIALS AND METHODS
Ten files each of ProTaper Gold (PG), Hyflex Electro-discharge Machining (HEDM), and TruNatomy (TN) were tested in a custom-fabricated dynamic cyclic fatigue testing device at 60° curvature having a radius of curvature of 5 mm. The number of cycles to the fracture (NCF) of each instrument was calculated and three continuous groups were compared by the Kruskal-Wallis test and Dunn test was used for pairwise comparison.
RESULTS
Cyclic fatigue resistance of HEDM was the highest, followed by TN. PG had the lowest among the three.
CONCLUSION
Within the limitations of the present results, it can be concluded that HEDM files appeared to be suitable for shaping complex canals with the greater number of cycles before it fractures.
目的
本研究的目的是使用动态测试装置比较三种不同的根管镍钛旋转器械的抗循环疲劳性能。
材料与方法
将10支ProTaper Gold（PG）、Hyflex电火花加工（HEDM）和TruNatomy（TN）锉分别在定制的动态循环疲劳测试装置中于曲率为60°、曲率半径为5mm的条件下进行测试。计算每支器械的断裂循环次数（NCF），并通过Kruskal-Wallis检验比较三个连续组，使用Dunn检验进行两两比较。
结果
HEDM的抗循环疲劳性能最高，其次是TN。PG在三者中最低。
结论
在本研究结果的限制范围内，可以得出结论，HEDM锉似乎适合于在断裂前以更多的循环次数来预备复杂根管。
Zotero 插件