热处理和仪器的动态循环疲劳阻力在反向运动中
Thaís Kauana Magalhães Sobral1, Lucila Piasecki2, Flávia Sens Fagundes Tomazinho3
1Department of Dentistry, Centro Universitário UniDomBosco, Curitiba, Brazil.
European endodontic journal
|May 31, 2023
概括
与 Reciproc 和 X1 Blue 仪器相比,Pro-R 和 Reciproc Blue 仪器在动态循环疲劳测试中表现出优越的耐疲劳性. 这一发现对于内牙科仪器的选择至关重要.
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:
- 互换仪器在内牙治疗中被广泛使用.
- 了解它们的耐疲劳性对于临床成功和防止仪器分离至关重要.
- 热处理的变化可以显著影响仪器的性能.
研究的目的:
- 为了比较四种不同的热处理互旋内牙仪器的动态循环疲劳阻力.
- 在模拟的临床条件下评估热处理对这些仪器寿命的影响.
主要方法:
- 测试了48个反转仪器 (X1蓝色,Pro-R,反转,反转蓝色).
- 仪器在人工道 (60°角,5mm半径) 中经过循环疲劳,在37°C的石块中进行了循环疲劳.
- 记录了故障的时间和碎片长度,并进行了统计分析.
主要成果:
- 与X1 Blue和Reciproc仪器相比,Pro-R和Reciproc Blue仪器显示出明显更高的耐疲劳能力 (p<0.05).
- 互换仪表显示中等疲劳耐力,明显高于X1 Blue.
- 断层分析证实循环疲劳是所有测试仪器的故障模式.
结论:
- Pro-R 和 Reciproc Blue 仪器提供了对动态循环疲劳的增强抵抗力.
- 这些发现表明,特定的热处理可以提高互换性内牙科文件的耐用性.
- 临床选择具有优越耐疲劳的仪器可以降低手术并发症的风险.
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