Limited reciprocity in curing efficiency of bulk-fill resin-composites

The aim of the study was to identify experimental limits of the general reciprocity hypothesis that the same photo-cure outcomes will result from applying essentially constant energy densities, despite reciprocal variations in the irradiance and irradiation time-period, for a representative set of bulk fill (BF) and non-BF resin composites. Six BF and two non-BF resin-composites were selected. The unset pastes were inserted into white acetal...