Zirconia Discs & Blocks
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About zirconia discs and blocks
Zirconia is an oxide ceramic; these materials have very favourable mechanical properties and are mainly suggested for crowns, implant components and bridges of several units. Traditional dental zirconia holds a small proportion of yttria stabiliser (3Y-TZP); it is extremely strong but has low translucency. Restorations are milled from pre-sintered blocks and then sintered at a high temperature, or machined from fully sintered blocks.
The strongest of the materials here, with aesthetics somewhat below the silicate ceramics. Milled oversize and then sintered, because it shrinks in the furnace.
Sources: Clinical Applications and Mechanical Properties of CAD-CAM Materials in Restorative and Prosthetic Dentistry: A Systematic Review (J Funct Biomater 2023) · Revolution of Current Dental Zirconia: A Comprehensive Review (Molecules 2022)























