Comparison of fatigue for three prefabricated threaded post systems

Frederick H. Kahn, Paul A. Rosenberg, Allan Schulman, Mitchell Pines

Research output: Contribution to journalArticlepeer-review


Post designs may have a direct effect on fracture resistance of endodontically treated teeth. This in vitro study compared the resistance of three prefabricated threaded post systems with lateral shearing forces. After endodontics were completed, prefabricated posts were inserted according to the manufacturer's instructions. A silver amalgam core was placed, and extracted human teeth were prepared to a standard size with a 1 mm gingival chamfer finished on sound dentin. A cast crown was fabricated and cemented, and the specimens were thermocycled. The test samples were secured to an Instron testing machine and loaded until failure. Fracture patterns were recorded, fractured surface areas were measured, and compressive stresses were calculated. However, there were no statistically significant differences among threaded posts in each test group.

Original languageEnglish (US)
Pages (from-to)148-153
Number of pages6
JournalJournal of Prosthetic Dentistry
Issue number2
StatePublished - 1996

ASJC Scopus subject areas

  • Oral Surgery


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