title: A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown.
abstract: This study investigated the effects of crown material, post material, and post geometry on stress distribution in molar tooth restored with post-core crown. A three-dimensional solid model consisting of the mandibular second molar tooth, periodontal ligament, cortical bone, and spongy bone was generated. Finite element analysis results showed that prefabricated posts with a composite resin core increased stress concentration at the cementoenamel junction (CEJ), while cast posts induced high stress at post-dentin interface. Increase in the elastic modulus of crown material also increased the stress concentration, especially at CEJ.
authors.affiliation: Mechanical Engineering Department, School of Engineering, Shahid Bahonar University, Kerman, Iran.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Mahmoudi
authors.forename: Alireza
authors.initials: A
authors.lastname: Saidi
authors.forename: Saied Abdolreza
authors.initials: SA
authors.lastname: Gandjalikhan Nassab
authors.forename: Maryam Alsadat
authors.initials: MA
authors.lastname: Hashemipour
mesh_terms: D000539:Alveolar Process / Q000502:physiology; D003188:Composite Resins; D003198:Computer Simulation; D003722:Dental Alloys; D003735:Dental Casting Technique; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis / Q000379:methods*; D003804:Dentin / Q000502:physiology; D055119:Elastic Modulus; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D008334:Mandible; D008963:Molar; D010513:Periodontal Ligament / Q000502:physiology; D011176:Post and Core Technique; D013718:Tensile Strength; D019237:Tooth Cervix / Q000502:physiology; D019553:Tooth, Nonvital / Q000503:physiopathology*
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D003776:Dental Porcelain