64层螺旋CT在上颌第一磨牙桩核冠三维有限元模型建立中的应用  

The application of three dimensional finite element model by 64-slice CT in post-core crown of maxillary first molar

作　　者：马雅静[1] 李冰[1] 武秀萍[1] 孙丹旭 王健[1] 邓菁菁[1] 韩建宁[2] 

机构地区：[1]山西医科大学口腔医院修复科,太原030001 [2]中北大学信息与通信工程学院

出　　处：《实用医学影像杂志》2016年第3期195-197,共3页Journal of Practical Medical Imaging

基　　金：山西省卫生和计生委科研项目(2014094);山西省科技厅科技攻关社会发展项目(20150313010-1)

摘　　要：目的利用64层螺旋CT建立桩核冠修复后的上颌第一磨牙及其牙周支持组织的三维有限元模型。方法通过螺旋CT扫描的方法,利用Mimics 10.01、Ansys、Hyper Mesh、Geomagic等图像处理软件,对层厚0.6 mm、层距0.1 mm的CT断层影像进行分析处理。结果网格模型总单元数693 261个,节点数987 653个。准确地建立了桩核冠修复后的上颌第一磨牙及其牙周支持组织的三维有限元模型。并可以按照不同研究目的,对模型进行修改和调整。结论本实验建模方法可行性强,方便快捷,能较精确地模拟临床口腔实际情况,为进一步研究上颌第一磨牙牙体缺损的修复奠定了良好的基础。Objective To conduct the fine 3D finite element （three-dimensional） model through the 64-slice CT （Computed Tomographic） scanning of the maxillary first molar and its periodontium with post-core crown. Methods The section image with the thickness of 0.6 mm and the interval of 0.1 mm was established by combination of the 64-slice CT scanning, Mimics 10.01 software, Ansys software, Hyper Mesh software, and Geomagic software. Results The model contains 693 261 elements and 987 653 notes, which was able to conduct the fine 3D finite element （three-di-mensional） model of the maxillary first molar and its periodontium with post-core crown. And it could be adjusted and altered according to different demands. Conclusion The effective and practical modeling method can simulate the natural clinic situation and facilitate the further research on restoring the dental defect of the maxillary first molar.

关 键 词：磨牙 桩核技术 成像 三维 体层摄影术 螺旋计算机 

分 类 号：R816.98[医药卫生—放射医学]