Accelerated aging effects on color and translucency of flowable composites.

Objectives: To evaluate the effect of accelerated aging on color and translucency parameter of composites.

Materials And Methods: Filtek Supreme Ultra Flowable, shades A1, A3, White, Tetric EvoFlow, shades A1, A3, Bleach, and Filtek Z250 shades A1, A3, B1 were evaluated. Color and translucency were recorded using a spectrophotometer after 24-hour storage (baseline) and after accelerated aging. The data were analyzed by analysis of variance.

Results: Fisher's PLSD intervals for comparisons among products and shades were 0.4, 0.1, 0.3, and 0.4 for ΔL*, Δa*, Δb*, and ΔE*, respectively. The data showed significant ΔE* and ΔL* main effects for composite product and shades (p < 0.001) and their interactions (p = 0.008 and p = 0.03), respectively. Tetric EvoFlow displayed the smallest aging-dependent color shift followed by Filtek Z250 and Filtek Supreme Ultra Flowable. Accelerated aging did not significantly affected the composites for translucency (p > 0.05).

Conclusion: The effects of aging on color of resin composites were composite and shade dependent. Translucency was not affected by accelerated aging.

Clinical Significance: The effects of aging on color of resin composites were composite and shade dependent.