3D pro multilayer zirconia block cerec ndi mawonekedwe achilengedwe amtundu wamitundu.Yucera 3D ovomereza zochokera luso multilayer kuonetsetsa gawo kiyubiki mkati zirconia akhoza kupangidwa kuchepetsa kuwala birefringence kwa mtundu uliwonse wa tetragonal zirconia polycrystals okhazikika ndi 3mol% Y2O3 zirconia, kotero translucency akhoza ziwonjezeke.