Title
Surface hardness and roughness in glass fiber modified polymethyl methacrylate resin: An in vitro study
Authors
Duddyala Vikram Raj, C. Ravi Kumar, M. Sujesh, A.V Rajanikanth, G. Harilal & CH. Kavitha
Affiliation
Department of Prosthodontics and Crown and Bridge, Mamata Dental College and Hospital, Khammam, Telangana, India; *Corresponding author
Duddyala Vikram Raj - E-mail: vikramssv5890@gmail.com
C. Ravi Kumar - E-mail: drravismile@gmail.com
M. Sujesh - E-mail: drmsujesh@gmail.com
A.V Rajanikanth - E-mail: rajanikanthayinampudi@yahoo.in
G. Harilal - E-mail: drharilalmds@gmail.com
CH. Kavitha - E-mail: kavithachbds@gmail.com
Article Type
Research Article
Date
Received April 1, 2026; Revised April 30, 2026; Accepted April 30, 2026, Published April 30, 2026
Abstract
Conventional polymethyl methacrylate denture base resin exhibits inadequate surface hardness and increased surface roughness, affecting durability and promoting microbial colonization. Therefore, it is of interest to evaluate the effect of different glass fiber forms on surface hardness and roughness of heat-cured polymethyl methacrylate. Hence, eighty specimens were divided into four groups (n=20): control, woven fiber, chopped fiber and longitudinal fiber reinforcement (2.5 wt %) and tested using Vickers microhardness and profilometry. Longitudinal fiber reinforcement showed the highest surface hardness (20.99±0.28 VHN), while woven fibers produced significantly greater surface roughness compared to control (p < 0.001). Thus, we show that glass fiber reinforcement improves hardness but increases roughness, with longitudinal fibers providing the most favorable balance for clinical application.
Keywords
Polymethyl methacrylate (PMMA) denture base; glass fiber reinforcement; surface hardness; surface roughness; Vickers hardness; profilometry
Citation
Raj et al. Bioinformation 22(4): 2527-2532 (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.
