用植入物支持的假牙设计的三维有限元素分析,用于上第一牙与根骨折
Zheqing An1,2, Yuhan Qi3, Wei Hong4
1School of Clinical Medicine, Guizhou Medical University, Guiyang, 550001, Guizhou Province, China.
BMC oral health
|September 27, 2025
概括
一个针对患者的3D有限元素模型准确地预测了布鲁克斯症患者的根骨折部位. 该研究建议牙科植入物使用低尖端倾斜度和低弹性模量材料,以减少压力和并发症.
科学领域:
- 生物材料科学 生物材料科学
- 生物力学 生物力学
- 牙科植入物学 牙科植入物学
背景情况:
- 通过使用圆束计算断层扫描 (CBCT) 和闭合记录,验证了一种针对患者的3D有限元素 (FE) 模型.
- 专注于一个骨折的上第一个骨的布鲁克斯症患者,以分析骨折力学.
研究的目的:
- 分析造成骨折相关压力度的侧下部运动.
- 评估3D-FEA在优化植入式支持假肢设计方面的临床实用性.
- 评估植入周围骨,固定装置和假肢上的生物力学应力分布.
主要方法:
- 模拟侧下部运动使用FE模型来识别压力度点.
- 模拟了三个石/树脂植入物皇冠,在断裂几何上具有不同的尖端倾斜度.
- 分析了生物力学应力分布,以评估对周围组织和植入物的影响.
主要成果:
- 在模拟侧下部运动期间,在临床根骨折部位确定压力度.
- 证明了植入物假肢的尖端倾斜度增加会增加植入物和植入物周围骨的压力.
- 与树脂相比,在柱冠上观察到更高的应力,在支柱上最大的应力接近30°倾斜时的的屈服强度.
结论:
- 3D-FEA有效地模拟了根骨折的牙中异常的闭塞应激,为压力载体的确定提供了一种新的临床方法.
- 对于布鲁克西斯症患者来说,牙植入物应具有较低的尖端倾斜度和具有较低弹性模量的材料.
- 优先考虑这些设计元素可以减轻压力度,并降低植入假肢中机械并发症的风险.
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