拟自然牙双牙根种植体的设计及其力学性能研究

摘要

Objective: This paper determine geometric parameters of double-roots analogue implant on basis of statistical analysis of natural teeth. And compare the advantage of double-roots analogue implant and single-root implant in mandible model by using finite element analysis to find the difference of their stress distribution. Method: Use SPSS to analyze natural morals, determine geometric parameters of double-roots analogue implant. Simulate the occlusal force loading in the finite element software to an-alyze stress distribution of two different implants in mandible. Results: The stress distribution of the two different implants in the mandible are quite different. The stress of bone and double-roots analogue implant is significantly less than single-root implant. Conclusion:Compared to the single-root implant, double-roots analogue implant is far more superior for restoration in molar region.%目的：本文在对自然磨牙统计分析的基础上，确定拟自然牙双牙根种植体的几何参数，通过有限元方法分析拟自然牙双牙根种植体与单牙根种植体在下颌骨模型中的应力分布，比较其优劣性。方法：采用SPSS对自然磨牙进行统计分析，确定拟自然牙双牙根种植体的几何参数；在有限元软件中模拟咬合力加载，分析两种不同的种植体对于下颌骨的应力分布。结果：两种不同种植体对于下颌骨的应力分布有较大差异，拟自然牙双牙根种植体在颌骨的应力分布明显小于单牙根种植体。结论：对于磨牙区的种植修复，拟自然牙双牙根的种植体在力学性能上比现有的单牙根种植体更具有优势。