Effect of glass fiber reinforcement on some mechanical properties of autopolymerizing polymethyl methacrylate.
OBJECTIVE
This study investigated the different effects of quantitative percentages of glass fiber intensity on the transverse strength, maximum deformation, and the modulus of elasticity of acrylic resin.


METHODS
Fifty-four specimens were formed in a specially designed mold to produce identical specimens in accordance with the manufacturer's recommendations. Six percentages of glass fiber reinforcement in loose random form were studied. Each glass fiber treatment percentage (0%, 1%, 2%, 5%, 10%, 15%) was related to the total powder/liquid mass.


RESULTS
The results indicated that 1% glass fiber treatment enhanced the transverse strength of the tested specimen. Maximum deformation at failure in the tested treatment groups was found to be different. The interaction of glass fiber concentration on fracture strength and deformation was significant (p < 0.0001).


CONCLUSIONS
The 1% glass fiber concentration was found to give the best fracture strength and deformation results. Significantly higher glass fiber percentages was found to weaken the resin.
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Department of Prosthodontic Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
D000704:Analysis of Variance; D019245:Compressive Strength; D003819:Denture Bases; D004548:Elasticity; D005898:Glass; D008422:Materials Testing; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D018709:Statistics, Nonparametric; D013718:Tensile Strength
C009753:fiberglass; D019904:Polymethyl Methacrylate