摘要
目的:建立玻璃离子水门汀垫底、近中-(MO)嵌体修复的下颌第一磨牙三维有限元模型。方法:采用Micro-CT扫描,应用Mimics、UG、Ansys、Midas-FEA等软件建立玻璃离子水门汀垫底、MO嵌体修复的三维有限元模型,并初步验证其有效性。结果:建成后的模型共生成265814个单元,53610个节点,与实体组织具有良好的力学和几何学相似性。应力云图可见Von-mises应力和第三主应力主要集中在牙颈部和咬合面的凹陷处,应力峰值均发生在颊侧牙颈部区域。结论:所建立的模型能够较真实地模拟实际情况,可为不同材料嵌体修复的生物力学研究提供有效平台。
Objective：To establish the three-dimensional（3-D）finite element model（FEM）of first mandibular molar restored with MO inlay and glass-ionomer cement as the rebase material.Method：Micro-CT scanning technology and software such as Mimics,UG,Ansys,Midas-FEA are applied to establish the 3-D FEM restored with MO inlay and glassionomer cement as the rebase material and to preliminarily validate the validity of the model.Result：The established model generates 265814 elements and 53610 nodes,the results display good mechanical and geometric similarity between the model and the solid tissue.It is observed from the stress nephogram that the Von-mises stress and the third principal stress are all centralized at the cervical area and the depressed part of the occlusal surface,and maximum stress always appears at the buccal side of cervical area.Conclusion：The model established in this study could simulate the practical condition very well and could offer an effective platform for the biomechanical research of inlay restoration with different materials.
出处
《临床口腔医学杂志》
2010年第2期67-69,共3页
Journal of Clinical Stomatology
基金
广东省科技计划项目(2008B011300018-8)
关键词
下颌第一磨牙
嵌体
三维有限元
first mandibular molar
inlay
three-dimensional finite element
