两种被动自接支架的扭矩时刻和应力分析,跨越不同的切口倾斜:一个三维有限元研究
Rajat Kanta Satapathy1, Shubhnita Verma1, Jangam Sowmya1
1Department of Orthodontics and Dentofacial Orthopaedics, Army College of Dental Sciences, Secunderabad, Telangana, 500087, India.
Journal of oral biology and craniofacial research
|July 25, 2024
概括
与矩形槽支架相比,方形槽被动自式支架表现出优越的扭矩表达. 这一发现表明,通过特定的支架和电线组合,对正牙牙移动有了更好的控制.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料工程 生物材料工程
- 计算力学 计算力学 计算力学
背景情况:
- 被动自结合支架在正统牙科中广泛用于有效的牙运动.
- 了解扭矩表达对于预测和控制正结果至关重要.
- 之前的研究没有使用先进的模拟来全面比较不同支架槽几何和线材之间的扭矩表达.
研究的目的:
- 为了比较矩形槽Damon Q括号和方形槽Pitts 21括号的扭矩表达特征.
- 为了评估不钢和合金合金线对扭矩表达的影响.
- 通过有限元分析评估不同切口倾斜对扭矩表达的影响.
主要方法:
- 使用有限元分析 (FEA) 遵循在医学上使用有限元分析 (RIFEM) 进行in-silico研究的报告准则.
- 创建了Damon Q和Pitts的3D模型,包括21个支架和一个大中央切口.
- 模拟的扭矩运动用0.019"x0.025"不钢和0.020"x0.020"和合金电线在00,50,100,150和200的切口倾斜度.
主要成果:
- 与Damon Q支架相比,Pitts 21支架在所有测试的倾斜角度上表现出更高的扭矩矩值,扭矩表达和Von-Mises应力.
- 观察到扭矩表达和应力的一致增加,因为切肢倾斜度下降.
- 方形插槽支架和特定电线的组合显示了增强的扭矩控制.
结论:
- 方形插槽被动自式支架在与可比电线尺寸一起使用时,与矩形插槽支架相比,显示出更高的扭矩表达.
- 这些发现表明,Pitts 21支架在正牙治疗中对扭矩表达具有潜在的更大控制.
- 建议进行进一步的体外实验,以验证这些有限元分析结果在临床环境中.
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