Fig. 13. Free-radical photopolymerization profiles for the photocurable composites: BisGMA/TEGDMA (50%/50% w/w) with bis-(4-t-butylphenyl)iodonium hexafluorophosphate (1% wt) and BI-PH-O-CH₃ (0.1% wt), polymerized at 365 nm (16.27 mW cm⁻²).