A Comparative Study of the Stress Distribution in Different Endodontic Post-Retained Teeth with and without Ferrule Design—A Finite Element Analysis

Abstract

Purpose. To analyze the stress distribution in an endodontically treated maxillary central incisor restored with various post-core systems and assess the benefit of ferrule using finite element analysis. Material and Methods. Twelve models with metal ceramic crown were created based on the combination of three types of post-core systems (titanium post-composite resin core, nickel-chromium post-core, and fiber reinforced composite resin post-composite resin core), two varieties of posts (tapered, parallel), and with or without ferrule. 100 N load was applied in three directions and the von Mises stress was compared. Results. Ferrule made no difference in stress distribution for the titanium and nickel-chromium posts, though it showed some stress reduction in fiber-reinforced composite resin posts. Nickel-chromium cast post-core transmitted the least amount of stresses to the dentin despite producing the maximum stress. Conclusion. Incorporation of ferrule offered some degree of stress reduction in nonmetal post, and it increased the stresses within cervical dentin.

Comparative evaluation of fracture resistance of glass fiber reinforced, carbon, and quartz post in endodontically treated teeth: An in-vitro study

“…It was observed by researchers that ferrule incorporation helps in stress distribution in post-treated teeth. [ 10 ] Maximum biting force of 100–193 MPa was recorded by Anusavice et al . [ 11 ] In oral cavity, these forces are higher and affect dental restorations under normal physiologic conditions.…”

Evaluation of stress distribution in maxillary central incisor restored with different post materials: A three-dimensional finite element analysis based on micro-CT data

“…In some of the reviewed 3D FEA studies, the force magnitude was chosen as 100 N. Therefore, F1, F2, and F3 in our study were determined to be 100 N for comparison. In the FEA study by Garhnayak et al, the resulting stress increased as the direction of the forces on the tooth changed from vertical to horizontal (33). In the vertical force, a more homogeneous stress distribution occurs because all the periodontal fibers are in function.…”

Microstructural investigation on marforming and conventional cold deformation in Ni–Ti–Fe-based shape memory alloys

“…The range of operation involves (i) simple one-way shapem emory effect where the original shape of the material recovers uponh eating and (ii) pseudoelasticitywhere up to 7%strain can be recovered upon loading and unloading [2,3].T hese propertiesr esult from martensitic transformations between B2 austenite (cubic CsCl-type lattice) and B19' martensite (monoclinic lattice) [3,4]. Anumber of products that exploit the pseudoelastic property of these alloys are becomingi ncreasingly popular in the market [5].…”