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温度依赖的效应对周期性疲劳抵抗在三个互换的内牙系统:一个体外研究

Marcela Salamanca Ramos¹, José Aranguren¹, Giulia Malvicini²

¹Department of Endodontics, Rey Juan Carlos University, 28032 Madrid, Spain.

Materials (Basel, Switzerland)

|March 13, 2025

概括

甲 (NaOCl) 灌的升高温度显著降低了牙周内牙文件的寿命. 与M-Wire文件相比,热处理的文件,如Reciproc Blue,在更高的温度下表现出优越的循环疲劳抵抗力.

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
生物材料是一种生物材料.

背景情况:

低酸 (NaOCl) 是内牙治疗中至关重要的灌剂.
尼克尔- (NiTi) 内牙科文件的机械性能和循环疲劳耐受性对于程序的成功至关重要.
灌剂的高温可能会影响NiTi文件的物理和化学特性.

研究的目的:

调查1%的低化物 (NaOCl) 溶液在不同温度 (5°C,37°C和60°C) 上对三种不同的NiTi内牙档案系统的循环疲劳抵抗的影响.
为了在模拟的内牙条件下比较 Reciproc NiTi M-Wire (REC),WaveOne Gold (WOG) 和 Reciproc Blue (RB) 文件的循环疲劳性能.

主要方法:

90个NiTi文件 (30个REC,WOG,RB) 在不钢人工道 (60度曲率,5毫米半径) 中进行循环疲劳测试.
档案用1%的NaOCl在5°C,37°C和60°C的控制温度下进行灌.
记录到骨折的时间和骨折时的负载,并进行统计分析.

主要成果:

在5°C时,WaveOne Gold (WOG) 和Reciproc Blue (RB) 文件的破裂周期明显高于Reciproc (REC) 文件 (p <0.05).
在60°C时,相对蓝色 (RB) 文件表现出比WOG和REC文件更好的循环疲劳耐力 (p <0.05).
在37°C的三个文件类型中,没有观察到周期性疲劳抵抗的显著差异.

结论:

高温的NaOCl灌显著降低了内牙NiTi文件的循环疲劳寿命.
与未经热处理或传统处理的文件 (例如,REC) 相比,经热处理的NiTi文件 (例如,RB) 在高温下对循环疲劳骨折具有更强的抵抗力.
临床医生应考虑灌温度在根管程序期间对仪器耐用性的潜在影响.

关键词:

循环疲劳抵抗力循环疲劳抵抗力循环疲劳抵抗力尼克尔的使用.互换文件可以互换文件.温度效应的温度效应是温度的影响.热处理是一种热处理.

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