Creep of experimental short fiber-reinforced composite resin

Sufyan GAROUSHI; Muhammad KALEEM; Akikazu SHINYA; Pekka K.VALLITTU; Julian D. SATTERTHWAITE; David C. WATTS; Lippo V. J. LASSILA

doi:10.4012/dmj.2011-247

Original Paper

Creep of experimental short fiber-reinforced composite resin

Sufyan GAROUSHI, Muhammad KALEEM, Akikazu SHINYA, Pekka K.VALLITTU, Julian D. SATTERTHWAITE, David C. WATTS, Lippo V. J. LASSILA

Author information

Sufyan GAROUSHI
Department of Biomaterials Science and BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku
Department of Restorative Dentistry & Periodontology, Institute of Dentistry, Libyan International Medical University
Muhammad KALEEM
Biomaterials Research Group, School of Dentistry, The University of Manchester
Akikazu SHINYA
Department of Biomaterials Science and BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku
Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University
Pekka K.VALLITTU
Department of Biomaterials Science and BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku
Julian D. SATTERTHWAITE
Biomaterials Research Group, School of Dentistry, The University of Manchester
David C. WATTS
Biomaterials Research Group, School of Dentistry, The University of Manchester
Lippo V. J. LASSILA
Department of Biomaterials Science and BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku

Keywords: Composite resin, Experimental fiber-reinforced composite, Creep

JOURNAL FREE ACCESS

2012 Volume 31 Issue 5 Pages 737-741

DOI https://doi.org/10.4012/dmj.2011-247

[Correction] Dental Materials Journal Vol.32 No.1 (2013) pp.196-196

Details

Abstract

The purpose of this study was to investigate the reinforcing effect of short E-glass fiber fillers oriented in different directions on composite resin under static and dynamic loading. Experimental short fiber-reinforced composite resin (FC) was prepared by mixing 22.5 wt% of short E-glass fibers, 22.5 wt% of resin, and 55 wt% of silane-treated silica fillers. Three groups of specimens (n=5) were tested: FC with isotropic fiber orientation, FC with anisotropic fiber orientation, and particulate-filled composite resin (PFC) as a control. Time-dependent creep and recovery were recorded. ANOVA revealed that after secondary curing in a vacuum oven and after storage in dry condition for 30 days, FC with isotropic fiber orientation (1.73%) exhibited significantly lower static creep value (p<0.05) than PFC (2.54%). For the different curing methods and storage conditions evaluated in this study, FC achieved acceptable static and dynamic creep values when compared to PFC.

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