使用HOSEA (正牙模拟,评估和分析的六足) 使用扭矩弧线对正牙牙移动进行力控制的生物机械模拟
Ellen Haas1, Andreas Schmid1, Thomas Stocker1
1Department of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Goethestraße 70, 80336 Munich, Germany.
Bioengineering (Basel, Switzerland)
|September 28, 2023
概括
扭矩分割弧线 (TSA) 和不钢 (SS) 弧线被模拟为正扭矩表达. 0.018" x 0.025"的TSA可靠地实现了10°的切口旋转,没有重新激活.
科学领域:
- 矯正牙科和生物力學
- 牙科材料科学 牙科材料科学
背景情况:
- 精确的扭矩控制在固定牙科治疗中至关重要,以实现可预测的牙运动.
- 了解不同类型的弧线在扭矩下的生物力学行为,对于优化治疗结果至关重要.
研究的目的:
- 通过使用一种新的生物力学模拟系统,研究和比较各种弧线配置的动态扭矩表达.
- 为了评估扭矩细分弧线 (TSA) 与不钢 (SS) 弧线在实现切口旋转方面的效率和可靠性.
主要方法:
- 利用一种新型的自动化,力控制生物机械模拟系统 (HOSEA) 来模拟牙运动.
- 模拟了四个弧线组:0.017" x 0.025" TSA (30°),0.018" x 0.025" TSA (45°),0.017" x 0.025" SS (30°) 和0.018" x 0.025" SS (30°) 具有0.022"自结括号.
- 使用克鲁斯卡尔-瓦利斯测试进行统计分析 (p < 0.050).
主要成果:
- 0.018"x0.025"的SS弧线产生了最高的初始旋转扭矩矩 (My = -9.835Nmm).
- 与SS弧线相比,扭矩细分弧线 (TSA) 的旋转矩每度 (My/Ry) 的减少明显较低 (p < 0.001).
- 0.018"x0.025"TSA是唯一一组始终实现至少10°切口旋转没有重新激活,可接受的附带力和时刻.
结论:
- 0.018" x 0.025"扭矩分割弧线 (TSA) 在实现 significant 切口旋转以实现正扭矩控制方面表现出卓越的可靠性.
- 与传统的SS弧线相比,TSA弧线提供了一种更有效和更可预测的方法,可以将口腔根扭矩传递给切口.
- 生物机械模拟系统 (HOSEA) 提供了一种有价值的工具,用于评估 ортодонтических archwires 的动态行为.
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