在清晰对齐器与固定器件中评估牙运动和定控制:有限元分析
1Clinical Project Manager, InBrace, Irvine, CA, USA.
Journal of pharmacy & bioallied sciences
|October 30, 2025
概括
与固定设备相比,透明对齐器,特别是带口腔板的C1型,提供了更好的牙运动控制和减少根部再吸收风险. 然而,透明对齐器显示出更大的位移和牙周带紧张.
科学领域:
- 生物机械分析分析
- ортодонтический设备的性能表现 ортодонтический设备的性能表现
- 牙科材料科学 牙科材料科学
背景情况:
- 清晰对齐器在正牙治疗中越来越受欢迎.
- 与传统的固定电器相比,评估它们的生物力学效率至关重要.
- 了解压力分布和根部再吸收风险对于患者安全至关重要.
研究的目的:
- 为了比较清晰对齐器模型与固定设备的生物力学性能.
- 评估牙的移动,压力分布和根吸收风险.
- 为特定的正牙运动确定最佳的清晰对齐器设计.
主要方法:
- 来自CBCT和口腔内扫描的3D模型的有限元分析 (FEA).
- 模拟前部收缩,使用两个清晰的对齐器设计 (C1型带口腔板,C2型带舌部收缩器) 和固定装置.
- 对位移的评估,对齐器中的Von Mises应力,以及牙周带 (PDL) 中的应力分布.
主要成果:
- 清晰的对齐器显示出比固定设备更大的垂直和垂直移位.
- 与固定设备 (68,668.1 MPa) 相比,模型C1 (平板板) 显示了较低的PDL应力 (693.733 MPa).
- 使用透明对齐器,PDL应力分布更均,可能最大限度地降低根吸收风险.
结论:
- 透明对齐器,特别是C1型,提供更好的扭矩和垂直控制,减少根吸收风险.
- 透明调整器比固定设备具有更大的位移和PDL应力.
- 固定设备提供优越的后部保持控制.
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