The influence of bis-EMA vs bis-GMA on the degree of conversion and water susceptibility of experimental composite materials -

The degree of conversion (DC) of mixtures with higher content of bis-EMA is affected by the presence of bis-GMA at lower energy density delivered from the curing device, suggesting that the restrictions caused by the presence of hydrogen bonds is dependent of the irradiation time used

Water sorption and filler characteristics of composites for use in posterior teeth. -

The purpose of this investigation was to determine the water sorption and solubility, as well as the filler composition and extent of chemical degradation in water, of eight different posterior composites.