在正常和冲击负荷场景下,部生物力学恢复了不同的假肢修复
1Biomedical Engineering Department, Faculty of Engineering, Helwan University, Cairo, Egypt. Yomna.abdelhamid@h-eng.helwan.edu.eg.
BMC oral health
|August 14, 2024
概括
这项研究评估了在正常和冲击负载下不同假肢修复的无牙下的生物力学行为. BIOHPP修复显示了最低的压力和应变,表明下更好地保护下免受骨折.
科学领域:
- 生物材料科学 生物材料科学
- 生物力学 生物力学
- 牙科假肢 牙科假肢
背景情况:
- 在没有牙的患者中,材料选择对于固定修复的寿命和稳定性至关重要.
- 传统的修复很常见,但越来越多地使用陶 () 和聚合物 (PEEK,BIOHPP) 等新材料.
- 在各种负载条件下了解无牙下的生物力学行为,对于预防骨折至关重要.
研究的目的:
- 分析无牙下的生物机械行为,在正常和冲击负载下进行四种不同的假肢修复.
- 为了比较与,和BIOHPP修复相关的应力,应变和变形模式.
- 评估撞击事件期间使用不同修复材料的下损伤风险.
主要方法:
- 创建了一个带有固定修复的下的有限元素模型,由,,和BIOHPP制成.
- 在三个负载条件下进行了模拟:正面咬伤力,最大间和下巴冲击力.
- 测量了拉伸/压缩应力和应变,以及总变形,以评估生物力学反应.
主要成果:
- 在所有负载场景中,下的前体始终经历了最高的压力和应变.
- 恢复4 (材料未指明,但可能是最高应力) 在正面咬伤和最大间时产生了最高的应力.
- 在下巴撞击下,修复1 (齐尔科尼亚) 和4导致前下体受损,而修复3 (BIOHPP) 表现出最低的应力和应变.
结论:
- 所有经过测试的恢复都保持了在正常负载条件下允许的限度内的应力和应变.
- 修复1 () 和修复4在下巴撞击事件中可能会损害前下体.
- 与和的修复相比,BIOHPP (修复3) 显示出卓越的生物机械性能,可以更好地保护下骨折.
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