The Addition of Silica Nanoparticles to Type IV Dental Stone: Influence on the Diagonal Tensile Strength

Introduction: Various methods have been studied to improve the properties of dental stones; one of them is adding nanoparticles to dental stones. In this study, the effect of adding different percentages of silica nanoparticles (0.5, 1, 2, and 5) on the diagonal tensile strength of dental stone type IV was investigated. Materials and Methods: Silica nanoparticles with percentages of 0.5, 1, 2 and 5 physically were mixed with dental stone type IV and then with distilled water according to the factory's instructions (23 ml to 100 g at 23°C). The diagonal tensile strength was measured using a Universal Testing Machine. In order to compare the diagonal tensile strength in different groups, ONE WAY ANOVA test and SPSS.26 software were used. The significance level was considered 0.05. Results: The addition of silica nanoparticles to dental stone type IV had no effects on the diagonal tensile strength of this material (P = 0.237). Conclusion: It can be concluded that adding silica nanoparticles does not negatively affect the diagonal tensile strength, and all concentrations performed similarly. This suggests that any of these concentrations can be used without concern for changes in tensile strength. However, further investigation is needed to evaluate the impact on other properties.