Flexural Strength, Hardness and Surface Roughness of 3D Printed Denture Base Resin Reinforced by Zinc Oxide Nanoparticles
Author(s): Mostafa Ehsan Al-Douri* and Mohammed Mouyad Sadoon
Aim: Examine the influence of Zinc Oxide (ZnO) nanoparticles on the flexural strength hardness and surface roughness of 3D printed denture base resin.
Materials and methods: The study was conducted by adding ZnO nanoparticles in concentrations of 2%, 3% and 4% to 3D printed denture base resin and assessing the influence of the addition on some mechanical and physical characteristics of the resin, including flexural strength, hardness and surface roughness. The findings were evaluated using descriptive
statistics (standard deviations and means), Analysis of Variance (ANOVA) and duncan's multiple range tests using the SPSS software.
Results: The results showed statistically significant increases in flexural strength values for nanoparticles employed at all concentrations, with the highest flexural strength seen at the 3% concentration. The findings also showed that the shore hardness was not affected by the nanoparticle’s additions. All concentrations employed in the investigation resulted in a
statistically significant reduction in surface roughness.
Conclusion: ZnO appeared to be a viable material for addition to the 3D printed denture base resin, as it boosted flexural strength while lowering surface roughness, although the hardness appeared to be unaffected.