Effects of a low-shrinkage methacrylate monomer and monoacylphosphine oxide photoinitiator on curing efficiency and mechanical properties of experimental resin-based composites

(a) FTIR bands of BisGMA and FIT; (b) Representative images illustrating polymerization volumetric shrinkage of FIT-based and BisGMA-based composites; (c) Depth of cure of the tested composites.156