Finite element analysis of stress distribution in four different endodontic post systems in a model canine

Biomed Mater Eng. 2015:26 Suppl 1:S629-35. doi: 10.3233/BME-151354.

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.

Keywords: CAD/CAM; FEA; canine; post.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bite Force
  • Computer Simulation
  • Computer-Aided Design
  • Cuspid / physiology*
  • Cuspid / surgery*
  • Dental Prosthesis Design / methods*
  • Dental Stress Analysis / methods*
  • Equipment Failure Analysis
  • Finite Element Analysis
  • Humans
  • Models, Biological*
  • Post and Core Technique / instrumentation*
  • Pressure
  • Stress, Mechanical