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VOLUME 13 , ISSUE 1 ( January-February, 2012 ) > List of Articles

ORIGINAL RESEARCH

Comparative Evaluation of Few Physical Properties of Epoxy Resin, Resin-Modified Gypsum and Conventional Type IV Gypsum Die Materials: An in vitro Study

Manmohan Choudary Gujjarlapudi, S Varalakshmi Reddy, Praveen Kumar Madineni, Venkata Narayana Nunna, Sanjay Dutt Manne

Citation Information : Gujjarlapudi MC, Reddy SV, Madineni PK, Nunna VN, Manne SD. Comparative Evaluation of Few Physical Properties of Epoxy Resin, Resin-Modified Gypsum and Conventional Type IV Gypsum Die Materials: An in vitro Study. J Contemp Dent Pract 2012; 13 (1):48-54.

DOI: 10.5005/jp-journals-10024-1094

Published Online: 01-02-2012

Copyright Statement:  Copyright © 2012; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

To compare and evaluate few physical properties of epoxy resin, resin-modified gypsum and conventional type-IV gypsum die material.

Materials and methods

In the present study, dimensional accuracy, surface detail reproduction and transverse strength of three die materials like epoxy resin (Diemet-E), resin-modified gypsum (Synarock) and conventional type-IV gypsum (Ultrarock) are analyzed. For dimensional accuracy, master die (Bailey's die) is used and calibrations were made with digital microscope. For surface detail reproduction and transverse strength, rectangular stainless steel master die (Duke's die) was used and calibrations were made with Toolmaker's microscope and Instron universal testing machine respectively. One-way analysis of variance (ANOVA) was performed on the means and standard deviation for groups of each test.

Results

The results of the study showed statistically significant difference among these materials in dimensional accuracy, surface detail reproduction and transverse strength.

Conclusion

Epoxy resin exhibited superiority in dimensional accuracy, surface detail reproduction and transverse strength and is nearest to the standards of accurate die material.

How to cite this article

Gujjarlapudi MC, Reddy SV, Madineni PK, Ealla KKR, Nunna VN, Manne SD. Comparative Evaluation of Few Physical Properties of Epoxy Resin, Resin- Modified Gypsum and Conventional Type IV Gypsum Die Materials: An in vitro Study. J Contemp Dent Pract 2012;13(1): 48-54.


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