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VITA YZ® ST and VITA YZ® XT materials are blanks used for fabricating dental restorations. VITA YZ® ST is indicated for fully anatomical anterior crowns, multi-unit fully anatomical anterior and posterior bridges, fully anatomical crowns and multi-unit bridges on direct screw-retained restorations, and single-tooth and multi-unit bridge frameworks of anterior and posterior crowns and bridges. VITA YZ® XT is indicated for fully anatomical anterior and posterior crowns, fully anatomical 3-unit anterior and posterior bridges, and anterior and posterior single-tooth and 3-unit bridge frameworks.

VITA YZ ST and VITA YZ XT discs are pre-sintered zirconia materials, partially stabilized with yttrium oxide (Y-TZP, yttria stabilized tetragonal zirconia polycrystal). VITA YZ ST is made of Super Translucent Zirconia and VITA YZ XT is made of Extra Translucent Zirconia. They offer higher translucency to better match natural dentition.