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《Chinese Journal of Prosthodontics》 2009-04
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Three-dimensional finite element analysis of the material and occlusal contact on dentinal stress distribution

SUN Ying-chun,ZHOU Hui,GAO Ping.(Department of Prosthodontics,College of Stomatology,Tianjin Medical University,Tianjin,300070)  
Objective:To investigate the relationship between various occlusal contacts,different post-core systems and the stress distribution of residual tooth structure.Methods:By SCT scanning,a three dimensional finite element model of maxillary central incisor restored was set p and analyzed after post-core restorations with four different materials,including cast Ni-Cr alloy,fiber post,cast gold alloy and ZrO2.Results:The stress distribution varied together with different occlusal contacts.The stress level at the apical third of the tooth restored with the fiber post is the smallest.Conclusion:Not only the post-core system but also the occlusal contact should be considerd sufficiently to improve the design of post and tooth preparation.
【CateGory Index】: R783
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