创伤诱导的压力分布在初级切口中,用预制的子皇冠恢复:3D有限元素分析
Ajay Goyal1, Manjari Reshikesh2, Mohammad Atif3
1Institute of Design, Nirma University, Ahmedabad, Gujarat, India.
概括
在主切口上预制的石皇冠改变了牙对创伤的反应. 与自然牙相比,与石恢复的牙在正面冲击下显示出较早的断层.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 生物力学 生物力学
背景情况:
- 预制的石皇冠是首选用于初级切口器修复.
- 的生物物理特性与天然牙不同,可能会影响创伤负载反应.
研究的目的:
- 使用in silico分析,在各种创伤性负载条件下比较自然和基恢复的初级切口器的生物机械反应.
主要方法:
- 进行了3D动态有限元分析.
- 在正面,斜面和切口方向应用了骨折和断裂的最小动态负荷.
- 分析了压力度,·米塞斯压力,骨折模式和位移.
主要成果:
- 在正面冲击下,恢复的牙表现出比自然牙 (4.5毫秒) 早期的冠状裂纹 (2.46毫秒).
- 在82N (正面),166N (斜) 和171N (切面) 的自然牙中断裂.
- 用基恢复的牙在斜冲击下不会断裂.
结论:
- 的王冠改变了初级切口的压力度模式.
- 永久牙的胚芽在切口撞击期间被保护免受压力度的压力.
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