THE INFLUENCE OF SURFACE ABRASIVE TREATMENT AND TEMPERATURE EFFECTS ON THE PROPERTIES OF DENTAL CERAMICS BASED ON METASTABLE TETRAGONAL ZIRCONIUM

Yttrium stabilized tetragonal zirconia (YTZP) has opened up new prospects for all-ceramic restorations. However, one of the most common problems in the manufacture of zirconia prostheses is the violation of the integrity of frames and chipped ceramic tiles. In the process of manufacturing zirconium frames of fixed prosthesis there are elements of abrasion and heat treatment. However, it is likely that these effects may affect the mechanical properties of frames. Therefore aim of this study was to determine the nature and impact of the blast and mechanical processing of samples from stabilized zirconia, using diamond tools, as well as high-temperature re-firing on the properties of their strength and the phase state and determine the feasibility of regenerating firing to restore the original properties and the phase state of the material.

tetragonal zirconia, frame, abrasion and heat treatment, mechanical properties, phase state