In vitro evaluation and comparison of transverse and impact strength of heat polymerized acrylic resin reinforced with polyethylene fibers and polypropylene fibers.

Prakash, Arun C and Rao, Bharath K (2014) In vitro evaluation and comparison of transverse and impact strength of heat polymerized acrylic resin reinforced with polyethylene fibers and polypropylene fibers. Journal of Advanced Medical and Dental Sciences Research, 2 (2). pp. 46-56.

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Abstract

Purpose: To evaluate and compare the transverse and impact strength of heat polymerized acrylic resin reinforced with polyethylene fibers and polypropylene fibers in vitro. Materials and methods: The specimens were fabricated from the custom made split brass moulds with a dimension of 64X13X3 mm as per ASTM standards. The specimens were tested for transverse bend test and impact test using Lloyd’s universal testing machine for 3 point bend test and Izod digital impact tester. The results were compared with the unreinforced control group. Results: The results were analyzed with 1- way analysis of variance (ANOVA) using Fisher test. The highest mean impact strength value was obtained for non reinforced Trevalon Hi and the lowest mean impact strength value was obtained for Trevalon reinforced withpolyethylene of all tested groups. When reinforced with polypropylene, Trevalon Hi had the highest impact strength and flexural strength. When reinforced with polyethylene fibers, Travelon Hi showed highest impact strength and flexural strength of both the resins were similar. The highest modulus of elasticity was recorded for polypropylene fiber reinforced Trevalon Hi group. Conclusion: Reinforcement with the fiber is an effective method to improve the impact and transverse strength of PMMA denture base resin .The reinforcement of polypropelene fibers in the mesh form can be an effective method to increase the longevity of the dentures made with Trevalon Hi resins.

Item Type: Article
Uncontrolled Keywords: Denture base resin; transverse strength, impact strength, polyethylene fibers.
Subjects: Dentistry > MCODS Manipal > Prosthodontics
Depositing User: KMC Manipal
Date Deposited: 08 Sep 2014 04:34
Last Modified: 08 Sep 2014 04:34
URI: http://eprints.manipal.edu/id/eprint/140578

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