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Fatigue susceptibility of an endodontic fibre post material.
- Source :
-
International endodontic journal [Int Endod J] 2014 Feb; Vol. 47 (2), pp. 202-9. Date of Electronic Publication: 2013 May 25. - Publication Year :
- 2014
-
Abstract
- Aim: To evaluate effects of ageing and fatigue on the elastic modulus and short-beam shear strength of a quartz fibre/epoxy resin post material.<br />Methodology: Cylindrical specimens (25 × 2.2 mm) were made. Elastic moduli were dynamically measured before immersion in water; after immersion in water; periodically during storage in water for up to 7 years; periodically during thermal cycling in water for up to 10 000 cycles to produce thermo-mechanical fatigue; and periodically during boiling in water for up to 100 h. After ageing, the specimens underwent short-beam shear strength testing.<br />Results: Elastic modulus was significantly decreased by thermal cycling and by immersion in boiling water, but not by water storage. Short-beam shear strength was profoundly decreased by all three ageing processes. Short-beam shear strength was much more sensitive than elastic modulus to the ageing or fatigue processes applied in this study.<br />Conclusions: A representative endodontic fibre post material was susceptible to a variety of ageing and fatigue processes. The effects of ageing and fatigue had a more pronounced impact on short-beam shear strength than on elastic modulus. The effects of boiling in water and thermal cycling in water were considerably larger than those of simple storage in water.<br /> (© 2013 International Endodontic Journal. Published by John Wiley & Sons Ltd.)
- Subjects :
- Elasticity
Shear Strength
Materials Testing
Post and Core Technique instrumentation
Subjects
Details
- Language :
- English
- ISSN :
- 1365-2591
- Volume :
- 47
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- International endodontic journal
- Publication Type :
- Academic Journal
- Accession number :
- 23711157
- Full Text :
- https://doi.org/10.1111/iej.12135