Fig. 2-.

A) Polymerization kinetics as measured by FT-IR as a function of the disappearance of C=C functional group at 6165 cm⁻¹. B) In situ polymerization shrinkage stress for control composites (blue circle) and TTE- composites (red square) conversion using a tensometer coupled with the FTIR. All samples were placed between two quartz rods, previously treated with a methacrylate-functional silane and irradiated for 3 min at ambient temperature with 300 mW/cm² of 400–500 nm light.