alexa Evaluation of Impact and Flexural Strength of Conventio
ISSN: 0974-8369

Biology and Medicine
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Research Article

Evaluation of Impact and Flexural Strength of Conventional Heat Cure Polymethyl Methacrylate Resin and High Impact

Deepa Shenoy1, K. C. Uma2, K. M. Mathew3, P. Sesha Reddy4, Ashish R. Jain5,*, K. Anjaneyulu6

1Department of Prosthodontics, Sree Anjaneya Institute of Dental Science, Modakallur, Atholi Post, Koyilandy, India

2Department of Prosthodontics, Asan Memorial Dental College and Hospitals, Chennai, India

3Department of Prosthodontics, Pariyaram Dental College and Hospitals, Pariyaram, Kannur, Kerala, India

4Department of Prosthodontics, Government Dental College, RIMS, Putlampali, Kadapa, India

5Research Scholar, Assistant Professor, Department of Prosthodontics, Saveetha Dental College and Hospital, Chennai, India

6Department of Endodontics, Saveetha Dental College and Hospitals, Chennai, India

*Corresponding Author:
Ashish R. Jain MDS
MD.ACU.VARMA, Research Scholar, Reader
Saveetha Dental College and Hospital
Poonamallee High Road, Chennai 600127, India
Tel: +09884233423
E-mail: [email protected]

Received date: December 21, 2016; Accepted date: December 28, 2016; Published date: December 30, 2016

Citation: Shenoy D, Uma KC, Mathew KM, Sesha Reddy P, Jain AR (2016) Evaluation of Impact and Flexural Strength of Conventional Heat Cure Polymethyl Methacrylate Resin and High Impact of Heat Cure Polymethyl Methacrylate Resin—An In Vitro Study. Biol Med (Aligarh) 9:389. doi:10.4172/0974-8369.1000389

Copyright: © 2016 Shenoy et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Denture fractures are very common, reflecting the fact that both impact strength and flexural strength are barely adequate. Its relatively low young modulus compared with metal renders the material flexible even in thick sections used in dentures. The purpose of this study was to find out and evaluate the impact and flexural strength values of certain brands of commercially available denture base resin and suggest their suitability. A total of 60 specimens (n=60) were fabricated using metal dyes and divided into four groups (Group I: PMMA-TREVALON, Group II: PMMA-ACRALYN-HI, Group III: PMMA-TREVALON-HI, Group IV: PMMA-ACRALYN-H) of commercially available denture base resin, with each group containing 15 specimens. All specimens were tested for flexural resistance on the Hounsfield tensometer and for impact strength on Hounsfield balanced pendulum impact machine. Data analysis was done using one-way ANOVA to compare means between the groups. Group IV showed significantly very high impact strength compared to Groups I and II. However, the difference between Groups III and IV was insignificant. Group IV showed significantly very high flexural strength compared to all other groups. Within the limitations of the study, it is observed that Acralyn-H super unbreakable recorded the highest impact and flexural strength.


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