相关实验视频

Updated: Jun 27, 2025

Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

Published on: January 17, 2025

一个新型塑形系统的表面粗性和循环疲劳耐受性:一个体外研究

Beliz Özel¹, Güher Barut², Elif Delve Baser Can²

¹Endodontics, Academic Center for Dentistry, Amsterdam, Netherlands.

|May 2, 2024

概括

新的- (NiTi) 内牙科文件,MTwo和Rotate,在使用后显示表面粗度增加. 与MTwo文件相比,旋转文件表现出优越的循环疲劳抵抗力,特别是在较少曲的道中.

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) 仪器具有先进的内牙安全性和耐用性.
地形档案表面特征影响临床性能和寿命.

研究的目的:

评估和比较MTwo和旋转NiTi内牙仪器的循环疲劳抵抗和表面粗度变化.
评估通道曲率对仪器性能的影响.

主要方法:

原子力显微镜 (AFM) 用于分析仪器仪表之前和之后的表面粗度.
循环疲劳测试使用不同度曲率 (45°,60°,90°) 的不钢块进行.
样本大小:n=6用于AFM,n=11用于疲劳测试.

主要成果:

仪器 MTwo 和 Rotate 仪器在仪器操作后表现出表面粗度增加 (p<0.05).
循环疲劳阻力随着两个系统的曲率增加而显著下降 (p<0.05).
与MTwo文件相比,旋转文件显示出更高的循环疲劳抵抗力 (p<0.05).

结论:

仪器仪表导致MTwo和旋转NiTi文件的表面粗度增加.
旋转文件为MTwo文件提供了优越的循环疲劳阻力.
增加通道曲率会对两种仪表系统的循环疲劳阻力产生负面影响.

更多相关视频

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

Performing Microscope-Mounted Y-Shaped Cutting Tests

Performing Microscope-Mounted Y-Shaped Cutting Tests

Published on: January 20, 2023

相关概念视频

Fatigue

Fatigue

Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...