Year : 2015

Volume : Volume 5

Issue : Issue 2

Address for correspondence :
Dr. Hiren Rana
rana_c_hiren@yahoo.co.in

Abstract

Aim: The aim of the study was to evaluate effect of pre and post polymerization on the flexural strength of glass fiber reinforced; and nylon fiber reinforced denture base acrylic resin. Materials and method: A total of 60 specimens of standard dimensions (65 mm x 10 mm x 3 mm) according to the ADA specification no. 12 were prepared. They were equally divided into four groups of fifteen specimens each.  These specimens were then subjected to three-point bending test on a Universal testing machine (INSTRON 3382).  The maximum load at which the specimens fractured was recorded and their flexural strength was calculated.  Subsequently all the groups were statistically analyzed and compared. Results: Postpolymerized glass fiber reinforcements exhibited the highest flexural strength, followed by nylon fiber. The prepolymerized glass fiber reinforcements exhibited the lowest values in comparison to control group specimens.     Conclusions:  Postpolymerized glass fibre reinforcements enhanced the flexural strength of acrylic resin, while prepolymerized glass fibre reinforcement decreased the flexural strength. Nylon fibre reinforcements marginally increased the flexural strength of the acrylic resins.

Keywords: Acrylic resins, complete denture, glass fiber, nylon fiber, flexural strength.