可拆卸部分假牙修复的三维有限元分析:结合印记与传统开放印记技术的比较研究
Xiangyu Cheng1, Shanchun Zhang1, Jingtong Wu1
1The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin, P. R. China.
Computer methods in biomechanics and biomedical engineering
|August 28, 2025
概括
可拆卸部分假牙的组合印记技术 (CIT) 显示出比开口印记技术 (OIT) 更好的机械性能. 减少牙和牙上的压力,提供更平衡的粘膜位移,以改善RPD功能.
科学领域:
- 生物材料科学
- 牙科工程
- 生物力学
背景情况:
- 可拆卸部分假牙 (RPD) 对于恢复功能和美观至关重要.
- 准确的印记技术对于最佳的RPD适配和性能至关重要.
- 传统的印记方法可能导致应力度和粘膜支不均.
研究的目的:
- 通过使用新型组合印记技术 (CIT) 制造的RPD的机械行为.
- 通过有限元分析 (FEA) 将CIT与传统的开口印记技术 (OIT) 的有效性进行比较.
主要方法:
- 使用三维有限元分析 (FEA) 来模拟机械行为.
- 使用患者特定数据,为CIT和OIT设计和分析了RPD.
- 分析的关键指标包括·米塞斯对支柱牙和气囊脊的压力,以及粘膜位移.
主要成果:
- 与OIT相比,CIT在支柱牙和气泡脊上表现出较低的Mises应力.
- 没有观察到CIT的显著应激度.
- 在没有牙的区域,CIT导致了更平衡的粘膜位移.
结论:
- 组合印记技术 (CIT) 在制造RPD方面具有显著的前景.
- 与OIT相比,CIT提供了优越的机械行为,包括减少压力和改善粘膜支持.
- FEA模拟表明CIT是RPD印记程序的一个有利的替代方案.
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