Effect of Incorporation of Poly Vinyl Pyrrolidone on Transverse Strength, Impact Strength and Surface Roughness of Autopolymerizing Acrylic Resin

G. Al Nakash  BDS, MSc, Suad

doi:10.25130/tjds.2.2.9

	Effect of Incorporation of Poly Vinyl Pyrrolidone on Transverse Strength, Impact Strength and Surface Roughness of Autopolymerizing Acrylic Resin
Tikrit Journal for Dental Sciences
Volume 2, Issue 2, December 2012, Pages 136-144 PDF (279.78 K)
DOI: 10.25130/tjds.2.2.9
Author
Suad G. Al Nakash BDS, MSc
(1)Ass. Lecturer, Department of Prosthodontics, College of Dentistry, Al –Mustansiryia University.
Abstract
Autopolymerizing acrylic resin is one of the most frequently used materials in dentistry, but it has relatively poor mechanical properties This study investigated the effect of the addition of poly vinyl pyrrolidone on transverse strength, impact strength and surface roughness of autopolymerzing acrylic resin. A total of 60 specimens were prepared, 30 specimens of each conventional and modified autoplymerizing acrylic.20 specimens of each groups were fabricated with dimensions of (64×10×2.5) mm to conduct the transverse strength and surface roughness tests, while the remaining 10 specimens of each group were fabricated with dimensions of (80×10×4) mm to perform the impact strength test. The results of this study showed that the modified autopolytmerized acrylic had significantly higher transverse strength, and significantly lower surface roughness values while there was no significant differences in impact strength value. It can be concluded that addition of Polyvinylpyrrolidone can improve transverse strength and surface roughness of autopolymerizing acrylic resin.
Keywords
modified autopolymerizing acrylic resin tran

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