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使用基于电阻的方法对旋仪器的循环疲劳评估

Congyu Yang¹, Yi Min¹, Wei Fan¹

¹State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China.

Journal of endodontics

|June 28, 2025

概括

电阻可以预测- (NiTi) 旋转仪器的循环疲劳. 这种方法不受自闭塞的影响,为仪器磨损和故障预测提供了可靠的指标.

科学领域:

牙周内科医院牙周内科医院牙周内科医院
材料科学材料科学材料科学
生物医学工程生物医学工程

背景情况:

- (NiTi) 旋转仪器在内牙科手术中至关重要.
循环疲劳是NiTi仪器的主要故障模式,影响程序安全.
需要一个可靠的指标来评估NiTi仪器疲劳.

研究的目的:

为了确定NiTi旋转仪器中电阻和循环疲劳之间的相关性.
评估电阻作为循环疲劳的可量化的指标.
为了确定自闭塞对NiTi仪器电阻的影响.

主要方法:

两种类型的NiTi仪器 (ProTaper Universal F2和ProTaper Gold F2) 进行了循环疲劳测试.
在循环负荷和模拟使用后测量电阻.
扫描电子显微镜分析了微裂的传播和自封化的影响.

主要成果:

电阻在增加周期性疲劳时呈现出二级增长.
微裂扩张与电阻增加相关.
自动封装并没有显著改变电阻测量结果.

结论:

电阻是NiTi旋转仪器周期性疲劳的可量化和预测指标.
这种电阻方法对自闭塞有很强的抵抗力,提高了其临床适用性.
这些发现支持使用电阻监测来评估仪器完整性.

关键词:

自动封锁是指自动封锁.在NiTi旋转仪器.循环疲劳是指周期性疲劳.电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电力电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电阻电力电阻电阻电阻电阻电力电阻电力电阻电力电力消毒消毒消毒消毒消毒消毒消毒消毒

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