title: Accelerated aging effects on color and translucency of flowable composites.
abstract: OBJECTIVE
  To evaluate the effect of accelerated aging on color and translucency parameter of composites.
  
  
  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).
  
  
  CONCLUSIONS
  The effects of aging on color of resin composites were composite and shade dependent. Translucency was not affected by accelerated aging.
  
  
  CONCLUSIONS
  The effects of aging on color of resin composites were composite and shade dependent.
authors: Department of Restorative Dentistry and Prosthodontics, The University of Texas School of Dentistry at Houston, Houston, TX, USA.
authors: Yonca
authors: Y
authors: Korkmaz Ceyhan
authors: Joe C
authors: JC
authors: Ontiveros
authors: John M
authors: JM
authors: Powers
authors: Rade D
authors: RD
authors: Paravina
mesh_terms: D003116:Color; D003188:Composite Resins; D013053:Spectrophotometry / Q000379:methods
chemical_list: D003188:Composite Resins