Title
Flexural strength and surface hardness in polymethyl methacrylate provisional restorative material with zirconium nanoparticles: An in vitro study
Authors
Rachamalla Srilekha, C. Ravi Kumar*, D. Chalapathi Rao, Y. Ravi Shankar & L. Sri Charitha
Affiliation
Department of prosthodontics, Mamata dental college, Khammam, Telangana, India; *Corresponding author
Rachamalla Srilekha - E-mail: rachamallasrilekha98@gmail.com
C. Ravi Kumar - E-mail: drravismile@gmail.com
D. Chalapathi Rao - E-mail: drduggineni@gmail.com
Y. Ravi Shankar - E-mail: raviys124@gmail.com
L. Sri Charitha - E-mail: Sricharithalagadapati@gmail.com
Article Type
Research Article
Date
Received May 1, 2026; Revised May 31, 2026; Accepted May 31, 2026, Published May 31, 2026
Abstract
Provisional PMMA restorations were not durable as they were deficient in flexural stability and surface hardness and their clinical relativity could not be trusted. Therefore, it is of interest to find out the ability of addition of 3 wt% zirconium nanoparticles to enhance mechanical properties of heat cured PPMMAR. It was tested on flexural strength on three-point bending test and surface hardness on Vickers hardness tester (160 of these). It was observed that zirconium reinforced specimens had a significantly high value of flexural strength and hardness than the control group (p < 0.05). Zirconium nanoparticles addition contributes to the mechanical behavior of PMMA to make it favourable in more permanent provisional restorations.
Keywords
Provisional polymethyl methacrylate resin (PPMMAR), zirconium nanoparticles, provisional restoration, flexural strength, surface hardness
Citation
Srilekha et al. Bioinformation 22(5): 2737-2741 (2026)
Edited by
Hiroj Bagde
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
