Three-dimension finite element analysis of stress of residual dentin of various post-and-core applications
LI Bing
LIU Fei
WANG Jian
WU Xiu-ping
Abstract：Objective To investigate the relationship between the different teeth post and core materials and stress dis-tribution of residual dentin and provide the basis for the design of clinical repair. Methods The fault images of spiral CT were used to construct the finite element analysis model of 1/2 defect in lingual side of maxillary first molar and all-ceramic crown,and load way was designed:600 N load was vertically concentrated,and ANSYS software was used to analyze the stress values of of residual dentin on five different teeth post and core materials. Results The Von mises stress of dentin was concentrated on the contact part of the gnathic side of prepared body of abutment in buccal side,the maximum tensile stress was concentrated on tooth neck in buccal side of the prepared body of abutment in buccal side. The stresses of dentin increased when the elastic modulus of the post core materials decreased. Conclusion Different elastic modulus of the post-core materials have a great impact on the stress distribution of dentin. For the clinical residu-al root on the restoration,we should use post-core with high elastic modules in order to protect the residual teeth.
Keywords：post and core materialsdentinfinite element analysis
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 413-416 )