Objectives: The aesthetic longevity of resin-based restoration materials is a critical factor in dental practice, as color stability directly influences patient satisfaction and the overall success of restorative procedures. This study investigates the impact of different light-curing modes on the color stability of various resin-based materials commonly used in dental restorations. Materials and Methods: A total of five resin composites were selected for this analysis, each subjected to three distinct light-curing modes: standard, high-intensity, and pulse curing. Color measurements were taken using a spectrophotometer before curing and after a simulated aging process that included exposure to staining agents and thermal cycling. The color changes were quantified using the CIEDE2000 color difference formula, which provides a more perceptually relevant assessment of color differences. Results: Results indicated that the curing mode significantly influenced the color stability of the resin composites. High-intensity curing demonstrated superior color retention compared to standard and pulse modes, particularly in materials with higher pigment concentrations. However, some composites
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