在形成狭窄的根通道时,使用单个文件系统生成的垂直力的评估
Abdulmohsen Alfadley1, Ahmed Jamleh2
1Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia.
European journal of dentistry
|July 16, 2024
概括
像OneShape和HyFlex EDM这样的单个文件系统会产生显著的尖端塑形力,特别是在后期插入时. 这些力量与ProTaper Next可比,表明根管制备动态的潜在差异.
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
- 生物机械工程 生物机械工程
背景情况:
- 根运河准备的目的是清洁和塑造根运河系统.
- 单个文件系统提供了效率,但需要了解它们的生物力学特性.
- 由内牙科档案产生的塑造力可以影响手术结果和仪器寿命.
研究的目的:
- 为了比较由OneShape (OS) 和HyFlex EDM (HEDM) 单个文件系统产生的垂直塑造力.
- 在根管准备过程中对ProTaper Next (PTN) 系统进行评估这些力量.
- 在模拟根管塑造过程中分析顶峰和冠状力生成.
主要方法:
- 大前的形状是使用OS,HEDM或PTN以大小为25的.
- 一致的,温和的进出运动被应用到每条通道上有三个仪器插入.
- 在每次插入后,使用数字力表测量垂直塑形力.
- 在插入之间用1%的NaOCl进行灌,并用15K大小的文件进行重复.
主要成果:
- 垂直力的大小随着仪器的不断进步而增加.
- 一个Shape (OS) 和HyFlex EDM (HEDM) 产生的顶峰力在2.5到7.2N之间,冠状力在1.3到2.9N之间.
- 在第二次和第三次插入过程中,ProTaper Next (PTN) 在第二次和第三次插入过程中产生了明显较低的顶峰力 (p < 0.05).
- 在第一个插入中,HyFlex EDM (HEDM) 产生的冠状力比OS和PTN要小;在后来的插入中,OS显示了最高的力 (p < 0.05).
- 在系统之间没有观察到塑形时间的显著差异 (p = 0.606).
结论:
- 单个文件系统,包括OS和HEDM,产生相当大的角塑形力,特别是在准备的后期阶段.
- 在测试系统中,强力配置不同,在以后的插入中,OS可能会施加更高的力.
- 了解这些力量动态对于优化根管道制备技术和确保程序安全至关重要.
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