title: Finite element analysis of stress distribution in four different endodontic post systems in a model canine.
abstract: To investigate the stress distribution in a maxillary canine restored with each of four different post systems at different levels of alveolar bone loss. Two-dimensional finite element analysis (FEA) was performed by modeling a severely damaged canine with four different post systems: CAD/CAM zirconia, CAD/CAM glass fiber, cast titanium, and cast gold. A force of 100 N was applied to the crown, and the von Mises stresses were obtained. FEA revealed that the CAD/CAM zirconia post system produced the lowest maximum von Mises stress in the dentin layer at 115.8 MPa, while the CAD/CAM glass fiber post produced the highest stress in the dentin at 518.2 MPa. For a severely damaged anterior tooth, a zirconia post system is the best choice while a cast gold post ranks second. The CAD/CAM glass fiber post is least recommended in terms of stress level in the dentin.
authors.affiliation: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Aijie
authors.initials: A
authors.lastname: Chen
authors.affiliation: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Feng
authors.affiliation: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Ruoyu
authors.initials: R
authors.lastname: Liu
authors.affiliation: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Longquan
authors.initials: L
authors.lastname: Shao
mesh_terms: D001732:Bite Force; D003198:Computer Simulation; D017076:Computer-Aided Design; D003481:Cuspid / Q000502:physiology* / Q000601:surgery*; D017267:Dental Prosthesis Design / Q000379:methods*; D003799:Dental Stress Analysis / Q000379:methods*; D019544:Equipment Failure Analysis; D020342:Finite Element Analysis; D006801:Humans; D008954:Models, Biological; D011176:Post and Core Technique / Q000295:instrumentation*; D011312:Pressure; D013314:Stress, Mechanical
keywords: CAD/CAM; FEA; canine; post