Abstract
Aims: The study aims to evaluate the effect of the addition of salinized zirconium oxide (ZrO2) and silicon oxide (SiO2) nanoparticles at two concentrations (1% and 3% by weight) on the dimensional accuracy of the heat-cured denture base material. Materials and Methods: Fifty samples were prepared in accordance with the manufacturer's instructions and divided into five groups (n=10) according to nanoparticle type and concentration (1 and 3 wt.%). The control, unmodified acrylic resin was used. Dimensional accuracy was measured using a superimposing of 3D software. Results: The result showed high significant difference between study groups, which showed less dimensional change in ZR3(3% ZrO2) and SI1(1% SiO2) than the control group. Conclusions: The merging of a 3% concentration of zirconium oxide and a 1% concentration of silicon oxide nanoparticles to heat-cured denture base material improved the dimensional accuracy.
