The analysis of the influence of heating on the depth of polymerization of composite materials of light curing is carried out. An electronic micrometer was used to measure the polymerization depth. The greatest difference in the depth of polymerization before and after heating was obtained from Filtek ULTIMATE "3M ESPE" composite material. The smallest difference in the depth of polymerization before and after heating of Nexcomp "MetabioMEDCo". After heating, the plastic and flow properties of the materials are improved, which improves the adaptation to the walls of the cavity during the restoration.

Keywords: Light-cured composite materials, polymerization, heating of composites, micrometre