Abstract
Clinically, the flow characteristics will govern the ease of mixing and handling and may affect the cavity wall adaptation.The flow characteristics of restorative composite resin pastes in the unset state were discussed by the viscosity vs.time curve and the shear stress vs.shear rate curve(the flow curve), measured with a cone-plate type rheometer.In the viscosity vs.time curve, viscosity was descreasing as the time has passed.In the flow curve, composite resin pastes showed hysteresis loops.These results show that composite resin pastes are thyxiotropic.
