Color stability is an important consideration in the selection of composite resins for aesthetic dental restorations. In recent years, SDR flow+ has gained popularity for posterior teeth restorations, although discoloration remains a significant concern. Bulk-fill resin composites, known for their higher cure depth, have also been increasingly used. This study aimed to compare the color stability of SDR flow+ material and conventional bulk-fill composite using an easy-shade device. This randomized controlled trial involved 40 disks each prepared in 8 × 8 mm plastic molds, with the samples divided into two parts. The paired sample t-test showed a P-value < 0.05, indicating a statistically significant difference in color stability between the two materials. While SDR showed greater stability in tea, bulk-fill showed better performance in coffee. Both materials showed significant susceptibility to color changes.
