Strength, abrasive wear, and durability properties of dental composites containing a fluorinated dimethacrylate reactive diluent

The effects of the fluorinated triethyleneglycol dimethacrylate (F-TEGDMA) on the mechanical properties of composites made with this monomer, under bo th dry and aged conditions, was investigated. Photo-polymerizable formulati ons of 50/50, 30/70 and 10/90 mol:mol% F-TEGDMA/BisEMA (F5E5, F3E7 and F1E9 ), and 50/50 mol/mol% TEGDMA/BisEMA (T5E5) and TEGDMA/BisGMA (T5G5) were mi xed with 76 wt% of silanated BaSiO2 filler to form the experimental composi te formulations. The experimental T5E5 and T5G5 formulations and a commerci al composite HXR (Herculite XR, Kerr), having a:similar formulation to the T5G5 group, served as the controls. The compressive strength (CS), diametra l tensile strength (DTS), flexural strength (FS) and abrasive wear rate (WR ) were determined and compared. Scanning electron microscopy (SEM) techniqu es were used to evaluate the fracture surfaces. ANOVA and Tukey-Kramer test s were used to determine between group differences.