Evaluation of the Effect of Potassium Fluoride Addition on Surface Roughness and Surface Hardness of Acrylic Resin Material
DOI:
https://doi.org/10.51173/ijmhs.v1i1.6Keywords:
Acrylic Resin, Potassium Fluoride, Surface Hardness, Surface RoughnessAbstract
Background: Acrylic is currently the most popular material for dental prosthesis fabrication. Fluoridated denture base resins have shown more stable properties such as decreased water sorption, good stain resistance, and solubility when compared to conventional ones. Fluoride addition may improve their properties.
Objective of study: Analyze how adding potassium fluoride (2% and 5%) affects the heat-cured acrylic resin material's surface roughness and hardness.
Materials and Methods: Testing on sixty heat-cured acrylic resin samples revealed that the samples were divided into two main groups: thirty samples were tested for surface roughness and thirty samples for surface hardness. Each group was divided into three groups: the control group, which included ten heat acrylic resin specimens in any combination, and the other two groups, which included ten heat acrylic resin specimens plus 2% potassium fluoride, and ten heat acrylic resin specimens combined with 5% potassium fluoride. The surface roughness and hardness specimens were prepared with the following dimensions: 65 mm x 10 mm x 2.5 mm, respectively. Elcometer (shore D, Germany) and profilometer tester (Time 3200/TR200, China) were employed for the evaluated hardness and surface roughness tests, respectively.
Results: The surface hardness test findings showed no statistically significant differences between the study groups; however, surface roughness test results revealed differences that were statistically significant across all study groups at P< 0.05.
Conclusion: The addition of 2% and 5% potassium fluoride to heat-cured acrylic resin materials produced no effect on surface hardness but it influenced the roughness test.
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