IADR Abstract Archives
Staining- and Aging-Dependent Color Changes of Cloud-Shade and one-Shade Resin Composites
Objectives: To compare the color stability of two “cloud-shade” and two “one-shade” resin composites exposed to staining and aging.
Methods: The “cloud-shade” composites were 3M experimental composite (EX) and SimpliShade (SS) – 3 shades each (light, medium and dark), while the “one shade” composites were Admira Fusion x-tra (AD) and Venus Diamond One (VE). Polymerized composite specimens (10 mm in diameter, 2-mm thick) were polished using PoGo disks for 40 seconds. Color measurements were performed before and after exposure to 3.8-day staining in coffee or wine (equivalent to a year of service with 15-minute exposure per day), or 150 kJ/m2 of accelerated aging, using a benchtop spectrophotometer (5 replications per condition × 3 conditions = 15 specimens per shade). The CIEDE2000 color differences in (DE00) were calculated. A two-way ANOVA was used to compare the effect of material and procedure, while a Tukey’s posthoc multiple comparison test was used to assess differences among levels within each variable (a=0.05).
Results: CIEDE2000 color differences of cloud-shade and one-shade resin composites before and after staining in coffee (C) and wine (W) and artificial accelerated aging (A).AD exhibited the best color stability upon staining, followed by EX, SS and VE. VE was the most stable when exposed to artificial aging. Statistically significant differences were recorded among materials and procedures (p<0.001), and their interactions (p<0.01).
Conclusions: Staining- and artificial accelerated aging provoked statistically significant material- and procedure-dependent color changes of cloud-shade and one-shade resin composites.
Methods: The “cloud-shade” composites were 3M experimental composite (EX) and SimpliShade (SS) – 3 shades each (light, medium and dark), while the “one shade” composites were Admira Fusion x-tra (AD) and Venus Diamond One (VE). Polymerized composite specimens (10 mm in diameter, 2-mm thick) were polished using PoGo disks for 40 seconds. Color measurements were performed before and after exposure to 3.8-day staining in coffee or wine (equivalent to a year of service with 15-minute exposure per day), or 150 kJ/m2 of accelerated aging, using a benchtop spectrophotometer (5 replications per condition × 3 conditions = 15 specimens per shade). The CIEDE2000 color differences in (DE00) were calculated. A two-way ANOVA was used to compare the effect of material and procedure, while a Tukey’s posthoc multiple comparison test was used to assess differences among levels within each variable (a=0.05).
Results: CIEDE2000 color differences of cloud-shade and one-shade resin composites before and after staining in coffee (C) and wine (W) and artificial accelerated aging (A).AD exhibited the best color stability upon staining, followed by EX, SS and VE. VE was the most stable when exposed to artificial aging. Statistically significant differences were recorded among materials and procedures (p<0.001), and their interactions (p<0.01).
Conclusions: Staining- and artificial accelerated aging provoked statistically significant material- and procedure-dependent color changes of cloud-shade and one-shade resin composites.
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