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VOLUME 22 , ISSUE 2 ( February, 2021 ) > List of Articles


Comparison of Mechanical Properties of PEEK and PMMA: An In Vitro Study

Spardha P Shrivastava, Rajani Dable, AP Nirmal Raj, Puneet Mutneja, Sparsh B Srivastava, Merazul Haque

Keywords : Flexural strength, Heat-activated PMMA, PEEK, Vickers microhardness test

Citation Information : Shrivastava SP, Dable R, Nirmal Raj A, Mutneja P, Srivastava SB, Haque M. Comparison of Mechanical Properties of PEEK and PMMA: An In Vitro Study. J Contemp Dent Pract 2021; 22 (2):179-183.

DOI: 10.5005/jp-journals-10024-3077

License: CC BY-NC 4.0

Published Online: 01-02-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Aim: Evaluation and comparison of flexural strength and hardness of heat-cured polymethylmethacrylate (PMMA) denture base with polyetheretherketone (PEEK). Material and methods: A total of 80 samples of PEEK and PMMA were prepared and divided into two groups: group A and group B, of 40 each. Both the groups were further divided into subgroups consisting of 20 samples of PMMA and PEEK. The group A specimens were tested for flexural strength by universal testing machine (UTM), and group B samples were subjected to hardness test using Vickers microhardness tester. The values obtained were subjected to statistical analysis. The readings were subjected to an unpaired t-test for comparison of flexural strength and hardness of PEEK and PMMA. Result: The flexural strength of PEEK was 183 MPa, while that of PMMA was 84 MPa. The hardness of PEEK and PMMA was 24 VHN and 19.4 VHN, respectively. Conclusion: It was observed that PEEK can be a potential denture base material with superior properties as compared to PMMA. Further researches are needed to be carried out. Clinical significance: PEEK as a denture base exhibits adequate flexural strength prolonging its clinical longevity and overcoming the most common reason for the failure of PMMA denture base that results in fracture.

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