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VOLUME 14 , ISSUE 6 ( November-December, 2013 ) > List of Articles

RESEARCH ARTICLE

A Comparative Evaluation of Impact Strength of Conventionally Heat Cured and High Impact Heat Cured Polymethyl Methacrylate Denture Base Resins: An in vitro Study

N Simhachalam Reddy, R Narendra, Sashi Deepth Reddy, CR Sashi Purna, M Chandra Shekar, S Balasubramanyam

Citation Information : Reddy NS, Narendra R, Reddy SD, Purna CS, Shekar MC, Balasubramanyam S. A Comparative Evaluation of Impact Strength of Conventionally Heat Cured and High Impact Heat Cured Polymethyl Methacrylate Denture Base Resins: An in vitro Study. J Contemp Dent Pract 2013; 14 (6):1115-1121.

DOI: 10.5005/jp-journals-10024-1461

Published Online: 01-06-2014

Copyright Statement:  Copyright © 2013; The Author(s).


Abstract

Aim

To evaluate the impact strength valves of certain brands of commercially available denture base resins and suggest their suitability.

Materials and methods

The denture bases we made using polymethyl methacrylates of acrylic resin family because they have excellent physical properties, simple to process and easy to reline and rebase. Six commercial brands of polymethyl methacrylate, namely Stellon (DPI-India), Acralyn-H (Asian Acrylate, India), Trevalon (Dentsply-England), Lucitone 199 (Dentsply/ York division), Acralyn-H (Super Unbreakable), Trevalon HI (Dentsply, Detray division, England) were tested by breaking them using Analog Pendulum (ASTM D 256).

Results

From the entire study the maximum impact strength was reported for Acralyn-H super unbreakable (Asian Acrylates, India) 62.19 joules.

Conclusion

All the analysis led to conclusion that there is basic change in material composition within and among the different groups of denture base resins.

Clinical implications

The complete dentures made using denture base resins with high impact strength valves (e.g. Acralyn-H super unbreakable) will be more durable and can be used by the patient for considerable period of time, i.e. beyond 4 to 5 years.

How to cite this article

Narendra R, Reddy NS, Reddy SD, Purna CRS, Shekar MC, Balasubramanyam S. A Comparative Evaluation of Impact Strength of Conventionally Heat Cured and High Impact Heat Cured Polymethyl Metharylate Denture Base Resins: An in vitro Study. J Contemp Dent Pract 2013;14(6): 1115-1121.

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