Zirconium dioxide (ZrO2), sometimes known as zirconia (not to be confused with zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the mineral baddeleyite.
Z 1440 (OTTO) Zirconium dioxide, puriss, 99.9% Cas 1314-23-4 - used as a strong base material in some full ceramic crown restorations.