Evaluation of Color Stability of Experimental Dental Composite Resins Prepared from Bis-EFMA, A Novel Monomer System

Color stabilities of experimental composite resins based on Bis-EFMA (a novel bisphenol A [BPA]-free monomer system) with 3M ESPE FiltekTM Z250 (FZ) and A-glycidyl methacrylate (Bis-GMA) urethane dimethacrylate (UDMA) were compared. was synthesized via the reaction between 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene 2-(methacryloyloxy)ethyl isocyanate. Experimental Bis-EFMA-, Bis-GMA-, UMDA-based composites prepared (20% each Bis-EFMA, Bis-GMA, UDMA, or triethylene glycol (TEGDMA) 60% glass filler). Eighty resin materials produced (n=5). The initial color values first day, week, after month immersion into black tea, coffee, cola, water solutions measured using a spectrophotometer (VITA Easyshade® V; Zahnfabrik, Bad Säckingen, Germany) against white background. UDMA- Bis-EFMA-based exhibited significantly less ΔE ΔL compared to Bis-GMA (p < 0.05). No significant difference found FZ other > Tea coffee caused changes in total color, light value, red–green, blue–green coordinate (ΔE, ΔL, Δa, Δb, respectively) cola At one week ΔE, Δb different has potential be used commercial dental as substitute for terms better stability.