LIST OF USES

Light curing resins are synthetic resins that chemically change from liquid to solid as a polymerization reaction is started when irradiated with light of a specific wavelength. While they have been used for plate making such as screen printing for a long time, they are still used today in a wide range of applications, including adhesives for electronic materials, resist inks, gel nails, and UV resins for handcraft. The most familiar example of the use of light curing resin is in dental treatment. It is popularly used nowadays to fill teeth that are cut to remove dental cavities, since it can be cured in a short period of approximately 20 seconds by ultraviolet irradiation. In general, curing is done under ultraviolet light (UV) with a wavelength of 200 to 400 nm, but the use of LEDs as light sources has attracted attention in recent years due to their advantages that include longer life, lower operating costs, and lower power consumption. However, it is possible that the mixtures that used to cure under UV will not solidify as expected when UV-LEDs, which have shorter wavelength bands, are used. With this being one of the impacting factors, thiol sensitizers that can cure the resins at a lower energy are attracting renewed attention.