有限元生物力学比较骨驱动和闭塞驱动的长肢片在侧面细分下重建中的定位
Dmytro Filonenko1, Yurii Chepurnyi1, Mykola Kryshchuk2
1Department of Maxillofacial Surgery, Bogomolets National Medical University, Kyiv, Ukraine.
Journal of oral biology and craniofacial research
|February 23, 2026
概括
将自由骨 (FFF) 放在更高的地方,在气囊脊上,可以在时减少下骨的压力. 这种改进的生物机械环境支持更好的植入物集成和牙假体的长期功能.
科学领域:
- 口腔和牙面部外科手术
- 生物材料工程 生物材料工程
- 有限元分析 有限元分析
背景情况:
- 重建侧面细分下缺陷通常涉及微血管自由片 (FFF).
- FFF的骨部件的位置对于成功的植入式支持固定假肢康复至关重要.
- 了解片定位的生物力学影响对于优化结果至关重要.
研究的目的:
- 用有限元分析 (FEA) 评估下骨和FFF骨部件的压力-应变状态.
- 为了比较两种片位置 (下下边缘与膜脊) 对于植入式支持的假肢.
- 为了确定有利于生物力学条件的最佳片位置.
主要方法:
- 在两种几何形状中生成CT衍生3D模型的重建下: (A) 下边界对齐和 (B) 气囊脊对齐.
- 在具有骨内植入物和固定假肢的模型上模拟了器负荷 (口腔和切口).
- 分析了四种FEA模型 (2个位置x2个负载场景),重点关注关键骨区域的应力分布.
主要成果:
- 气泡峰位置 (模型B) 导致骨峰应力显著降低 (10-40%的减少),相比下边界位置 (模型A) 在静态和切口负荷下.
- 一个值得注意的例外是,在B型中,在切口负荷下增加了中间-下部应力 (约. 增加了4倍).
- 在两种定位场景中,在植入物部附近一致聚集的尖顶骨中峰值米塞斯应力.
结论:
- 在膜脊上FFF骨部件的位置更高,提供了更有利的应力-应变环境.
- 这种优异的生物力学负载分布支持增强的骨质整合和长期功能稳定性.
- 建议使用气泡峰位置,以改善下重建的结果,使用FFF进行假肢康复.
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