Home Subscription Services

The International Journal of Prosthodontics
IJP Home Page
About the Editor
Editorial Board
Accepted Manuscripts
Author Guidelines
Submission Form
Reprints / Articles
Quintessence Publishing: Journals: IJP
The International Journal of Prosthodontics

Edited by George A. Zarb, BChD, DDS, MS, MS, FRCD(C)

ISSN 0893-2174

March/April 2003
Volume 16 , Issue 2

Share Abstract:

Strength and Mode of Failure of Unidirectional and Bidirectional Glass Fiber–Reinforced Composite Materials

Kok-Heng Chong, BDS, MS, John Chai, BDS, MS, MJ, DLaw

Pages: 161–166
PMID: 12737248

Purpose: The flexural strength of two commercially available dental fiber-reinforced composites (FRC) (glass fiber–reinforced composite material), one unidirectional and the other bidirectional, were investigated. Materials and Methods: Ten uniform beams of core materials and ten beams of laminated core materials were fabricated for FibreKor and Vectris Frame. The specimens were subjected to a three-point bending test. Flexural strength for both FRC materials was determined with and without their composite laminations. The strength data were analyzed using the Weibull method. Modes of failure for both systems were determined using SEM. Results: The strength of FibreKor was significantly greater than that of Vectris Frame when comparing the core materials with and without their respective composite laminations. Mode of failure of FibreKor was predominantly debonding with fiber fracture. Vectris Frame did not exhibit debonding failure. Mode of failure for Vectris Frame was fiber fracture with delamination and matrix microfracture. Conclusion: FibreKor, a unidirectional FRC, demonstrated higher flexural strength than Vectris Frame, a bidirectional FRC. Debonding of fibers from the matrix possibly contributed to toughening mechanisms such as crack deflection, fiber pullout, and fiber bridging in FibreKor. Int J Prosthodont 2003;16:161–166.

Full Text PDF File | Order Article


Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.
  © 2015 Quintessence Publishing Co Inc

Home | Subscription Services | Books | Journals | Multimedia | Events | Blog
Terms of Use | Privacy Policy | About Us | Contact Us | Advertising | Help | Sitemap | Catalog