Long-Term Effect of Nanosized Boric Acid Powder on Optical Properties of Polymer Infiltrated Ceramic CAD-CAM Material

The current study investigated the effect of boric acid (H3BO3) nanosized powder on optical properties a Computer-Aided Design and Manufacturing (CAD-CAM) polymer infiltrated ceramic material. Specimens (n = 60), (15 × 8 1.5 mm3) were fabricated from network (PINC) (Vita Enamic, Vita Zahnfabrik, VITA-shade scale A2). Boric (B) nano was applied to Enamic in half specimens 30), while other left untreated (NB) 30). Aging for all performed 5 h at 134 °C. Color coordinates (L*, a*, b*) before after aging measured calculate color change (ΔE00) translucency parameter (TP) within between B NB groups. One-way ANOVA used analyze parameters (α 0.05). Only L* increased (p < 0.001). b* significantly changed application affected mean smaller than difference No significant found TP 0.143). decreased use provided stability aged tested