This document provides information on ready-made primary anterior zirconia crowns called ZIRKIZ crowns. It discusses that zirconia crowns are esthetic, strong and do not require dental impressions. The document reviews the physical and chemical properties of zirconia and its biocompatibility. It describes how zirconia favors gingival integration and outlines the advantages, indications, preparation, cementation and shape adjustment of ZIRKIZ crowns. Case presentations show examples of using the crowns to correct dental issues like crossbite in primary teeth.