上颌前磨牙薄弱根管桩核冠修复的有限元应力分析
杨广聚;白保晶;张振庭
【期刊名称】《北京口腔医学》 【年(卷),期】2011(019)005
【摘要】Objective To investigate the stress distribution of normal roots,flared roots of maxillary single root premolar restored with four kinds of post-core crown by three-dimensional finite element analysis. Methods After one intact single root maxillary premolar was scanned with micro-CT, the data was dealt with MIMICS, GEOMAGIC, ANSYS. The three-dimensional finite element models of normal root,flared roots of maxillary premolar restored with four different post-core crowns were established, and the S1 and shear stress distribution of the roots was analyzed with ANSYS. Results S1 stress concentrated at middle lingual surface, post apex part of the root As the elastic modular increased, the stress concentration increased, and the stress gradually transferred into inner and apex of the root Conclusion The stress intensity increased successively as the following order; polyethylene post-core, composite resin, glass-fiber post, composite resin core,flowing resin,glass-fiber post,flowing resin core,gold alloy post-core.%目的 建立上颌单根前磨牙正常根管和薄弱根管4种桩核冠修复方式的三维有限元模型,并进行应力分析,为临床前磨牙薄弱根管的修复提供参考.方法 正常上颌单根前磨牙,通过micro-CT扫描、MIMICS、GEOMAGIC、ANSYS等软件建立正常根管、薄弱根管及其
上颌前磨牙薄弱根管桩核冠修复的有限元应力分析
