As a solution for adjusting the refractive index of materials, we propose SukgyungAT’s composite materials. Notably, SukgyungAT has successfully developed zirconium-silicate composites with two distinct refractive indices (1.51 and 1.54), offering customers a broader range of formulation options.The silane-treated Ytterbium Oxide-Silicon Dioxide composite provides excellent radiopacity and transparency while maintaining high mechanical strength.Additionally, the silane-treated Zinc Oxide-Silicon Dioxide composite imparts a certain level of antibacterial properties to dental products while preserving optical translucency.Silane treatment is available as an option.