在Neoendo Flex和ProTaper Next的使用寿命中,在单根牙中使用反复运动的旋转文件
Ajay Chhabra1, K P Ramya2, B Saravana Prathap2
1Department of Dentistry, AIIMS, Kalyani, West Bengal, India.
Journal of conservative dentistry and endodontics
|September 14, 2023
概括
相反运动 (RM) 与连续运动 (CM) 相比,在根运河准备过程中减少了- (NiTi) 仪器骨折. 在这项研究中,ProTaper Next (PTN) 和Neoendo Flex文件都显示了类似的准备时间.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
背景情况:
- 根管清洁和塑造是牙周内关键程序.
- - (NiTi) 仪器骨折是内牙治疗中常见的程序挑战.
- 了解仪器寿命和故障模式对于安全有效的治疗至关重要.
研究的目的:
- 为了评估Neoendo Flex和ProTaper Next (PTN) 旋转文件的使用寿命,当它们在反转运动 (RM) 中使用时.
- 为了比较这些NiTi文件系统在RM和连续运动 (CM) 中的通道准备时间.
- 分析不同运动类型下的NiTi文件的断裂机制.
主要方法:
- 使用了100个上永久中心切口器.
- 使用RT与PTN (n=25) 和Neoendo Flex (n=25) 文件准备了50颗牙.
- 使用CM与PTN (n=25) 和Neoendo Flex (n=25) 文件准备了50颗牙.
- 评估了断裂阻力和准备时间;通过扫描电子显微镜检查了文件断裂机制.
主要成果:
- 在RM中,PTN和Neoendo Flex文件都可以用于单根牙中至少25个道.
- 在RM或CM中,在PTN和Neoendo Flex文件之间没有观察到总准备时间的显著差异.
- 曼-惠特尼U测试用于统计分析.
结论:
- 相反运动 (RM) 与连续运动 (CM) 相比,仪器骨折的发生率较低.
- 在研究的局限性范围内,RM似乎是NiTi仪器在根管制备中使用的更安全的动作.
- 需要进一步的研究,以充分阐明不同运动动力学对NiTi文件性能的长期临床影响.
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