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1/2025
vol. 78 abstract:
Original paper
Comparative evaluation of the effect of reinforced basalt fibre and glass fibre on flexural strength of heat-cured denture base resin: an in vitro study
Karan Bharvada
1
,
Sudhir Meena
1
,
Narendra Padiyar
1
,
Pragati Kaurani
1
,
Ajay Gupta
1
,
Priyanka Lekhwani
2
J Stoma 2025; 78, 1: 15-20
Online publish date: 2025/03/19
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Introduction:
Acrylic denture bases are the most commonly used materials for fabrication of prostheses. However, there are some drawbacks of acrylic resin denture bases, such as low strength, susceptibility to breakage, and poor thermal conductivity, which prompted the exploration of innovative solutions. Objectives: The aim of this study was to evaluate and compare the flexural strength of polymethyl methacrylate (PMMA) reinforced with glass fibers and basalt fibers. Material and methods: A total of 150 heat-cured acrylic resin specimens of 65 × 10 × 3 mm dimension were prepared. Five groups of 30 specimens each were divided on the basis of percentage of fibers added: Group A (PMMA + glass fibers; 2 wt.%), group B (PMMA + basalt fibers; 2 wt.%), group C (PMMA), group D (PMMA + basalt fibers; 3 wt.%), group E (PMMA + basalt fibers; 1 wt.%). Flexural strength of each specimen was assessed with three-point bending test using universal testing machine (Shimadzu, Japan). Collected data was analyzed with one-way ANOVA and post hoc Tukey test to determine differences between groups. Results: The highest mean flexural strength was found in the group E (PMMA + basalt fibers; 1 wt.%), i.e., 62.93 MPa with standard deviation of 0.9725 MPa, while the lowest mean flexural strength was found in the group C (PMMA), i.e., 45.366 MPa with standard deviation of 2.910 MPa. Conclusions: Within limitation of the study, the flexural strength of PMMA resin incorporated with 1% basalt fiber was the highest, followed by subsequent groups. From this it can be concluded that mechanical properties of denture base resin can be enhanced by adding basalt and glass fibers. keywords:
flexural strength, glass fiber, heat-cured resin, basalt fiber, PMMA resin |
