Effect of no ferrule on failure of teeth restored with bonded posts and cores

Gen Dent. 2004 Mar-Apr;52(2):143-6.


This study investigated how the absence of a ferrule affected the failure load of teeth that had been restored with bonded fiber posts and resin cores. There was a significant difference (p < 0.001) between the ferrule and nonferrule groups' load to failure. For the ferrule group, root fracture was the predominant mode of failure; in the nonferrule group, debonding failures were predominant.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Acid Etching, Dental
  • Composite Resins / chemistry
  • Dental Bonding*
  • Dental Prosthesis Design*
  • Dental Restoration Failure*
  • Dentin-Bonding Agents / chemistry
  • Humans
  • Post and Core Technique / instrumentation*
  • Root Canal Therapy
  • Stress, Mechanical
  • Surface Properties
  • Time Factors
  • Tooth Fractures / physiopathology
  • Tooth Root / injuries
  • Tooth, Nonvital / rehabilitation


  • Composite Resins
  • Dentin-Bonding Agents