DESCRIPTION
EPIC is a high-density, light-cured, radiopaque and fluorescent nano-hybrid composite resin. Its inorganic composition contains a mixture of micro and nanoparticles, with sizes ranging from 5 nm to 2 µm. This size distribution allows a more efficient charge compaction, where smaller particles fill the spaces between larger particles. The inorganic composition is equivalent to approximately 79% by mass.
EPIC has fluorescence and an excellent finishing and polishing, as well as excellent mechanical properties, it can be used in anterior restorations, including veneers, and posterior restorations. It has a complete shade system, with shades for enamel, dentin, body, effects and pigments.
Its composition contains a monomeric organic matrix whose polymerization process occurs through the formation of free radicals. The camphorquinone present in its composition is activated by the incidence of visible light with wavelengths ranging between 400 and 500 nm (blue spectrum) with maximum absorption at 468 nm. When activated, this component transfers one of its electrons to a photoinitiation supporting substance, resulting in the formation of free radicals and triggering the polymerization process.
Several factors contribute to an efficient photoactivation: incidence of light in the 400 to 500 nm spectrum, power of the dental curing light device, distance from the light source, exposure time and thickness of the material layer.
The polymerization time for EPIC resin is 40 ± 2 seconds if a dental curing light with a wavelength of 400 to 500 nm is used.
