Fig. 4From: Influence of irradiation distance on the mechanical performances of resin composites polymerized with high-irradiance light curing unitsA Flexural strength, BÂ micro-shear bond strength, and CÂ degree of conversion of the Z3P with different irradiation distances and times. Different lowercase letters indicate significant differences between groups. C Different uppercase and lowercase letters indicate significant differences in the degree of conversion between groups collected on the top and bottom surface, respectivelyBack to article page