Comparative Evaluation of Compressive and Diametral Tensile Strength in Die Stone Reinforced With Different Types of Nanoparticles: An In Vitro Study.

AIM

To investigate the effect of different types of nanoparticles on the compressive strength (CS) and diametral tensile strength (DTS) of type IV dental stones.

MATERIALS AND METHODS

A total of 100 specimens were made from the mould for all five groups. Four commercially available nanoparticles (aluminium oxide (AlO), silicon dioxide (SiO), zinc oxide (ZnO), and zirconium oxide (ZrO)) were used in this study in a concentration of 10%. CS and DTS tests were performed in a universal test machine. The data were statistically analysed using ANOVA and Student's t-test.

RESULTS

The interaction between nanoparticles and the type of dental stone was found to be statistically significant (p < 0.05). CS and DTS values decreased by adding all four nanoparticles. The lowest CS and DTS were observed in 10% ZnO nanoparticles when added to type IV dental stone.

CONCLUSION

It was concluded that the addition of nanoparticles (AlO, SiO, ZnO, and ZrO) to die stone significantly decreased the CS and DTS for all groups. Among all groups, the incorporation of 10% ZrO nanoparticles (group E) to die stone showed significantly less decrease in CS and DTS compared to AlO, SiO, and ZnO. Incorporation of ZnO nanoparticles, on the other hand, showed a significantly more amount of decrease in the CS and DTS compared to AlO, SiO, and ZrO.