Related Experiment Video
Updated: Oct 29, 2025
A Soft Tooling Process Chain for Injection Molding of a 3D Component with Micro Pillars
Published on: August 4, 2018
Comparison of Mechanical Properties of PEEK and PMMA: An In Vitro Study
Spardha P Shrivastava1, Rajani Dable2, A P Nirmal Raj2
1Department of Prosthodontics, Teerthanker Mahaveer Dental College, Moradabad, Uttar Pradesh, India; Awadh Dental College and Hospital, Jamshedpur, Jharkhand, India, Phone: +91 9035209702,
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.
