Color Stability of Nanoparticles-Modified Dental Resin-Based Composites

To evaluate the effect of beverages (coffee, tea, Cola-Cola, and mineral water) on color stability resin-based composite (RBC) materials modified with different nanoparticles (NPs). The specimens (70/beverage) were fabricated from light-cured RBCs divided according to NPs into four groups: one control, unmodified (N0); three experimental—ZrO2 (Zr), TiO2 (Ti), SiO2 (Si) groups. Each experimental group was further subdivided two subgroups NP concentrations: 3 wt.% 7 (n = 10). A spectrophotometer used assess change (∆E) before after six months immersion. Data analyzed compared using one-way-ANOVA followed by Bonferroni’s post-hoc test (α 0.05) subsequently ∆E value conversion National Bureau Standards (NBS) units. ZrO2, TiO2, demonstrated smaller changes immersion in than (p < 0.001). Zr groups showed lowest ΔE, Ti Si groups; a 3% concentration resulted lower mean ΔE 7% concentration. NBS findings that coffee tea produced marked unacceptable (NBS units >3), Coca-Cola noticeable between 1.5 3), while water slight ≤ 1). Modification both concentrations as well SiO2, may improve its stability. Based results, immersed clinically acceptable changes, those unacceptable.