Share Page:

Volume 18 , Issue 1
January/February 2005

Pages 28–33

Effect of Water Storage on the Flexural Properties of Three Glass Fiber–Reinforced Composites

John Chai, BDS, MS, MJ, DLaw/Yutaka Takahashi, DDS, PhD/Kazuhiro Hisama, DDS, PhD/Hiroshi Shimizu, DDS, PhD

PMID: 15754889

Purpose: The effect of water sorption on the flexural strength and flexural modulus of three fiber-reinforced composites was studied. Materials and Methods: Bar-shaped specimens of each material were prepared according to the manufacturers’ instructions. The flexural strength and modulus of each specimen were tested after the specimens were immersed in distilled water for 1, 7, 60, and 180 days. SEMs were taken to examine the mode of failure. The volume percentage of fiber content of each fiber-reinforced composite was experimentally estimated. Results: The ascending order of flexural strength and modulus among the materials was generally: FibreKor < Stick < Vectris. The flexural strengths of Stick and FibreKor specimens at 1 and 180 days were not significantly different. Although the 180-day Vectris specimens possessed significantly lower flexural strength than the 1-day specimens, the flexural strengths of Vectris specimens at 1, 7, 60, and 180 days remained significantly higher than those of Stick and FibreKor. The difference in flexural modulus for each fiber-reinforced composite related to the duration of water immersion was not significant. Conclusion: Water immersion affected the flexural strengths of the three composites to a different degree but did not affect their flexural moduli significantly. For each duration of water immersion, the flexural property of the fiber-reinforced composite, in ascending order of significant difference, was: FibreKor < Stick < Vectris. Int J Prosthodont 2005;18:28–33.

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.


© 2017 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Author Guidelines
Accepted Manuscripts
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us