Monolithic zirconia dental crowns. Internal fit, margin quality, fracture mode and load at fracture

The production methods for dental ceramics have improved greatly over the years [1 –3]. Increased proportion of crystalline particles has led to higher resistance to functional loads, but also changed the optical properties of the material [2,4]. An yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) popularly called “zirconia” has been the most common dental high-stre ngth ceramic for some years. Y-TZP contains only polycrystalline particles in a metastable tetragonal crystal structure, and is the dental ceramic material with the highest fracture strength available today [5,6].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research