Zirconia is a very hard ceramic that is used as a strong base material in some full ceramic restorations. Zirconia is relatively new in dentistry and the published clinical data is correspondingly limited. The full name of zirconia used in dentistry is yttria-stabilized zirconia or YSZ. The zirconia structure is usually designed on a digitally with scans of the patient, impression, or model. The core is then milled from a block of zirconia in a soft pre-sintered state. Once milled, the zirconia is sintered where it shrinks by 20% and reaches its full strength of 1200MPa.
Many dentists will not use monolithic crowns on anterior teeth unless a full mouth restoration is being done. Layered zirconia crowns offer highly aesthetic properties as well as incredible strength and durability.
FULL MILLED ZIRCONIA (FMZ) is the most cost effective and strong restoration available and is highly suited for use with posterior restorations.
Combining high quality strength and aesthetics with ease of use, Emax is the state of the art monolithic structure with superior durability (360 – 400 MPa) and optismised translucency.