Sukgyung AT always considers how to improve the quality of customers’ products with our innovative materials. In order to control the refractive index of materials, one of the solutions is to use Sukgyung AT’s composite materials. The silanized Ytterbium Oxide-Silicon Dioxide composite provides excellent radio-opacity and transparency while maintaining mechanical property. The silanized Zinc Oxide-Silicon Dioxide composite offers a certain level of antimicrobial property in dental products while maintaining optical translucency. Silane treatment is also available.