螺距对支抗微种植体—骨界面影响的三维有限元分析

发布时间：2018-05-13 04:17

本文选题：有限元分析 + 下颌骨　；参考：《国际口腔医学杂志》2015年05期

【摘要】：目的分析螺距变化对微种植体—骨界面、微种植体的应力分布和位移的影响,为支抗微种植体的临床选择和优化设计提供理论参照。方法运用Pro/E软件建立不同螺距的微种植体和下颌骨三维有限元模型,用Hypermesh软件对该模型进行网格划分,并在微种植体顶部施加与颌骨面平行的正畸力1.96 N,用ANSYS软件进行三维模拟计算。结果微种植体—骨界面应力峰值集中在微种植体颈部和尖部,当螺距为0.5 mm时,微种植体颈部的Vonmises应力和位移峰值最小,分别为27 MPa和0.001 5 mm,且应力和位移曲线最为平缓。结论螺距变化影响微种植体和微种植体—骨界面的应力分布。在本实验条件下,螺距为0.5 mm时,微种植体—骨界面、微种植体本身应力和位移最小。
[Abstract]:Objective to analyze the effect of pitch change on the stress distribution and displacement of microimplant-bone interface and microimplant in order to provide a theoretical reference for the clinical selection and optimal design of microimplant Anchorage. Methods three dimensional finite element models of microimplants and mandibles with different pitch were established by using Pro/E software. The models were meshed with Hypermesh software. The orthodontic force of 1.96N parallel to the maxillofacial surface was applied on the top of the microimplant, and the three-dimensional simulation was carried out with ANSYS software. Results the peak stress of microimplant bone interface focused on the neck and tip of the microimplant. When the pitch was 0.5 mm, the peak value of Vonmises stress and displacement in the microimplant neck was the smallest, 27 MPa and 0.001 mm, respectively, and the stress and displacement curve was the most gentle. Conclusion the stress distribution of microimplant and microimplant-bone interface is affected by the change of pitch. When the pitch is 0.5 mm, the stress and displacement of the implant-bone interface are the least.
【作者单位】：佛山市口腔医院正畸科;天津市口腔医院正畸科;佛山市中医院禅城高新区医院口腔科;
【基金】：佛山市科学技术局医学类科技攻关项目(2014AB00389) 佛山市卫生和计划生育局医学科研课题项目(2013201)
【分类号】：R783.6

【共引文献】