Mechanistic interpretations of fracture toughness and correlations to wear behavior of hydroxyapatite and silica/hydroxyapatite filled bis-GMA/TEGDMA micro/hybrid dental restorative composites

The fracture toughness and wear behavior of designed and fabricated dimethacrylate (bis-Glycidyl methacrylate in combination with Triethylene glycidyl dimethacrylate as resin-matrix system) based restorative visible-light cured composites filled with hydroxyapatite (micro-filled) and silica/hydroxyapatite (micro-hybrid) combinations were evaluated. Two series of composites were prepared with filler-loadings in the range of 20–50 wt%. Conditional...