Color Stability of Recent Resin Composites
Objectives: To evaluate the color stability of recently resin composite continuously exposed to staining agent.
Methods: Disks of six resin composites (G-ænial™ A’CHORD; GC Corporation, Filtek Supreme XTE; 3M ESPE, Tetric EvoCeram; Ivoclar Vivadent, Tetric Prime; Ivoclar Vivadent, CeramX Spectra ST; Dentsply Sirona, Omnichroma; Tokuyama Dental) were prepared in diameter of 15 mm with 1.0 mm thickness (n=5). All resin composites shade was A2 except for Omnichroma that is only one-shade.
After polymerization and polished (SiC1000), specimens were immersed in distilled water or red wine for 7 days at 37°C. Color change [ (ΔE* ) ] was calculated by Spectrophotometer (CM-3610, Konica Minolta) over a white and black background. Data were analyzed with Tukey’s honestly significant difference multiple comparison test (p＜0.05).
Results: All tested materials showed significant color changes after 7 days staining immersion. ΔE* of sample varied from 2.04 (G-ænial™ A’CHORD over black background) to 20.3 (Filtek Supreme XTE over white background). G-ænial™ A’CHORD ΔE* for color change was significantly lower than that of other resin composites.
Conclusions: Color stability of recent resin composites seems to be dependent on the composition of the product itself, and G-ænial™ A’CHORD was shown to have relatively high color stability among the six resin composites tested.