精品文档---下载后可任意编辑不同角度生物力作用于上颌第一前磨牙的三维有限元分析的开题报告摘要：本文基于三维有限元分析方法，讨论了不同角度生物力作用于上颌第一前磨牙的力学影响。主要采纳了构建上颌牙弓的三维有限元模型、建立上颌第一前磨牙的界面模型、仿真不同角度下的生物力作用等方法。结果表明，牙冠面对咬合力的应力分布较为均匀，根部面对咀嚼力的应力集中，侧部面对侧向力的应力分布也较为集中。相比而言，45 度角度下对牙齿应力影响最大，而 0 度角度下对牙齿应力影响最小，应力能量变化幅度达到 27%以上。讨论结果对临床牙齿矫正、修复等具有较大的实际指导意义。关键词：三维有限元分析；上颌第一前磨牙；生物力；应力分布；角度变化。Abstract:This paper studies the mechanical effect of different angles of biological forces on the upper first molar of the upper jaw based on the three-dimensional finite element analysis method. The main methods used are the construction of the three-dimensional finite element model of the upper arch, the establishment of the interface model of the upper first molar, and the simulation of biological forces under different angles. The results show that the stress distribution of the crown facing the biting force is relatively uniform, the stress is concentrated on the root facing the chewing force, and the stress distribution on the side facing the lateral force is also relatively concentrated. Among them, the impact of 45-degree angle on teeth is the greatest, while the impact of 0-degree angle on teeth is the smallest, and the change in stress energy amplitude is more than 27%. The research results have practical guiding significance for clinical tooth correction, repair, and other fields.Key words: three-dimensional finite element analysis; upper first molar; biological force; stress distribution; angle change.
