在骨移植下缺陷中的重建板的生物力学评估:有限元素分析
Diogo de Vasconcelos Macedo1, Milena Gomes Melo Leite2, Maria Eduarda Carlos Conceição3
1DDS, PhD, Department of Oral and Maxillofacial Surgery, São Paulo State University (UNESP), School of Dentistry, Araraquara, Brazil.
Journal of stomatology, oral and maxillofacial surgery
|January 15, 2026
概括
对下缺陷的更厚的重建板增加了螺丝应力,特别是在前下. 建议使用锁定螺丝来防止诸如松动或骨再吸收等并发症.
科学领域:
- 生物材料工程 生物材料工程
- 口腔和牙面部外科手术
- 生物力学 生物力学
背景情况:
- 分段下缺陷通常需要用骨移植和固定板进行重建.
- 板厚影响机械稳定性和应力分布,影响固定结果.
研究的目的:
- 用3D有限元素分析 (FEA) 来分析不同厚度的下重建板中的应力和应变.
- 为了评估板块厚度对板块,螺丝和骨移植中应力分布的影响,用于下缺陷.
主要方法:
- 从CT数据创建了下的3D有限元模型.
- 模拟了三种板厚 (2.0,2.4,3.0毫米) 的交叉体,体和角度缺陷,使用骨移植和锁定螺丝.
- 应用了口腔和肌肉力量来模拟的负荷.
主要成果:
- 增加的板厚减少了板张力,但增加了螺丝应力,特别是在骨切除术附近.
- 交叉体区域经历了最高的压力,其次是身体和角度.
- 骨移植压力仍然很低,表明变形最小.
结论:
- 较厚的板块提高了机械阻力,但由于增加了螺丝应力,风险是螺丝松动或围植入骨再吸收.
- 前下最容易受到不利的应力分布的影响.
- 建议使用刚性板块的锁定固定系统,以尽量减少与螺丝有关的并发症.
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