在多次重复使用和灭菌后,在两个互换文件中的结构和化学变化的体外研究
Amanda Zambaldi Marim1, Carlos Eduardo da Silveira Bueno1, Carolina Pessoa Stringheta1
1Department of Endodontics, São Leopoldo Mandic School, São Leopoldo Mandic Research Center, São Paulo, Brazil.
概括
重复使用像WaveOne Gold和R-Motion这样的内仪器会导致重大的金和化学变化. 这些变化,包括腐蚀和元素变化,增加了仪器骨折的风险,建议在重复使用时谨慎使用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 牙科材料 牙科材料
背景情况:
- 在根管手术过程中,内牙仪器经历了相当大的压力.
- 了解可重复使用的内牙科档案的材料降解对于患者的安全和治疗疗效至关重要.
研究的目的:
- 在多次使用后评估WaveOne Gold (WOG) 和R-Motion (RM) 内牙仪器的金和化学变化.
- 识别与仪器重复使用相关的元素组成和表面地形的变化.
主要方法:
- 使用扫描电子显微镜 (SEM) 和能量分散式X射线光谱 (EDS).
- 仪器被分为控制组 (新) 和重复使用组 (在1,2或3个杆仪器仪表后).
主要成果:
- 主要在对照组和首次使用组中观察到形形成.
- 随着重复使用,R-Motion文件显示含量增加,氧含量减少.
- WaveOne Gold文件显示在腐蚀区域中浸度较大.
结论:
- 内牙仪器的多重使用导致可证明的地形和化学变化.
- 由于材料降解和潜在骨折的风险增加,建议在重复使用内牙科仪器时谨慎使用.
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