中国临床医学2016，Vol.23Issue(3)：278-281,4.
纤维桩和铸造桩修复尖牙牙体缺损后牙本质受力的三维有限元分析
Three-dimensional finite element analysis of dentin stress after the restoration of canine defect with fiber post and cast post
摘要
Abstract
Objective:To explorethe stress magnitude and distribution of canine tooth defect dentin restored by fiber post and cast post ,and provide a theoretical basis for clinical application .Methods:The maxillary canine model was set up . After the dentin was restored by glass fiber post and cast cobalt-chromium alloy post ,its stress value and distribution was analyzed by the three-dimensional finite element analysis (3D FEM ) using ANSYS .Results:After restoration of tooth defect by cast cobalt-chromium alloy post and glass fiber post ,the stress peak value of dentin at the labial side was higher than that at the lingual side .The peak value of von Mises stress was located on the root surface at 1/3 of the root neck ,and von Mises stress value showed a decreasing trend from 1/3 of the root neck to 1/3 of the root tip .The peak value of von Misesstress , tensile stress peak value and compressive stress peak value of glass fiber post were all significantly lower than those in cast cobalt-chromium alloy post(P<0 .05) .Conclusions:Three dimensional finite element analysis can better simulate the tooth stress distribution ,and glass fiber post can help relieve tensile and compressive stress of caninetooth defect and lower the risk of tooth fracture .关键词
纤维桩/铸造桩/尖牙缺损/三维有限元分析/应力Key words
fiber post/cast post/structure defect of canine/three dimensional finite element analysis/stress分类
医药卫生引用本文复制引用
戚岳孙,吴晔,李楠,徐曹春,余海..纤维桩和铸造桩修复尖牙牙体缺损后牙本质受力的三维有限元分析[J].中国临床医学,2016,23(3):278-281,4.基金项目
复旦大学附属金山医院院级课题项目［2014-11（院）］．Supported by Project of Jinshan Hospital ，Fuan University （2014-11）． （）
