对缩大部的各种植入物配置的比较评估:一个三维的有限元素分析
1Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
Journal of stomatology, oral and maxillofacial surgery
|October 9, 2025
概括
添加 pterygoid 植入物到斜骨或跨 sinus 植入物可以显著降低缩 reconstructions 的压力. 斜体和状体植入物组合 (模型2) 显示了牙科植入物中最理想的应力分布.
科学领域:
- 牙科植入物学 牙科植入物学
- 生物材料科学 生物材料科学
- 有限元分析 有限元分析
背景情况:
- 缩的膜膜骨对牙科植入物康复提出了挑战.
- 传统的植入物可能无法在严重的骨再吸收中提供足够的稳定性.
- 对于复杂的病例来说,先进的植入技术,如斜骨,横 sinus 和 pterygoid 植入物被探索.
研究的目的:
- 为了评估和比较缩大部的不同植入物配置中的应力分布.
- 评估对周围骨的斜骨,横 sinus 和 pterygoid 植入物的生物力学影响.
- 通过有限元分析 (FEA) 确定用于重症上缩症康复的最佳植入策略.
主要方法:
- 创建了三维有限元素分析 (FEA) 模型,模拟了四种配置:斜体,斜体与pterygoid,跨 sinus和跨 sinus与pterygoid植入物.
- 植入物被放置在侧切口,第二前和第二部区域.
- 设计了一种用条支的假肢,并对每个模型垂直和斜 (20°) 施加300N的力.
主要成果:
- 在所有模型中,斜力产生了比垂直力更高的应力度.
- 腹肌植入模型的压力通常低于跨 sinus 模型,特别是在垂直负荷下.
- 结合pterygoid植入物 (All-on-6协议) 显著降低了骨头和假肢的压力,前植入物von Mises压力减少了50%以上.
结论:
- 牙和骨植入物 (模型2) 的组合为缩部康复提供了最有利的应力分布.
- 跨鼻和骨类植入物 (模型4) 也产生了可比的,可接受的应力值.
- 状体植入物是对All-on-4或状体植入物协议的宝贵补充,以提高稳定性和减少压力.
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