Assessment of Color Change After Adding Nano Aluminum Oxide to Heat-Cure Acrylic

Objective: This study investigates the effect of introducing nano-sized aluminum oxide (Al2O3) particles into heat-cure acrylic resin on color stability. Color changes are an important cosmetic element in dental materials. The purpose of this work was to examine the color change of polymethyl methacrylate reinforced by varied weight percentages wt.% of nano Al2O3 fillersmaterials on degree of conversion and polymerization of dual cure resin cement after 24 hours. Material and Methods: This study was 40 disc-shaped samples (No. 10 per group) were prepared. Group A control, Group B PMMA with Al2O3 0.5%, Group C PMMA with Al2O3 1%, Group D PMMA with Al2O3 2%. Results: The results showed that group D with AL2O3 2% had a greater mean value of color change than the control group. While group B 0.5% had the lowest mean value of color change. Conclusion: Nano-Al₂O₃ can be incorporated into heat-cure acrylic to improve material properties, but concentration is critical for maintaining color stability.