KIDS STAINLESS STEEL CROWNS REFILL (1PC) DESCRIPTION OPTIMALLY – THE PERFECT ALLOY FOR PAEDIATRIC CROWNS: Kids Crowns are made from Optimalloy, which is the result of years of collaborative research between Shinhung and Department of Paediatric Dentistry of Seoul University, Korea Optimalloy is a stainless steel alloy that was specifically created to have extraordinary metallurgical …