Fracture resistance of endodontically treated anterior teeth restored with four post-and-core systems

Quintessence Int. 2003 May;34(5):349-53.


Objective: The purpose of this study was to evaluate the fracture resistance and the mode of failure of endodontically treated teeth restored with four post-and-core systems.

Method and materials: Forty intact human incisors were randomly divided into four groups. Teeth from each group received endodontic therapy and one of four post-and-core systems: serrated, parallel-sided, cast post and core; serrated, parallel-sided, prefabricated post and resin-composite core; carbon-fiber-reinforced (CFC) post and resin-composite core; and ceramic post and resin-composite core. A full-coverage metal crown was fabricated and cemented onto each tooth. Each specimen was subjected to a compressive load at a 45-degree angle to its axis until failure. The failure load was recorded and compared statistically. The mode of failure of the specimens was analyzed.

Results: There was no significant difference in the failure loads among groups. More catastrophic root fracture was detected in the group restored with ceramic posts and resin-composite cores.

Conclusion: The fracture resistance of endodontically treated teeth restored with these four post-and-core systems could be accepted clinically. Unfavorable tooth fracture was shown in all groups.

Publication types

  • Clinical Trial
  • Evaluation Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Carbon
  • Carbon Fiber
  • Ceramics
  • Composite Resins
  • Compressive Strength
  • Dental Restoration Failure*
  • Humans
  • Incisor
  • Maxilla
  • Post and Core Technique*
  • Statistics, Nonparametric
  • Tooth Fractures / complications*
  • Tooth, Nonvital / complications*


  • Carbon Fiber
  • Composite Resins
  • Carbon