Chipping Resistance of Graded Zirconia Ceramics for Dental Crowns

Chipping of Veneering Ceramics in Zirconium Dioxide Fixed Dental Prosthesis

Zirconia Bioceramics as All-ceramics Crowns Material: a Review

Zirconia (ZrO 2 ), known as a kind of bioceramics widely applied in prosthodontics, is considered as a promising alternative to conventional bioceramics owing to its desirable mechanical strength, toughness, wear resistance, corrosion resistance, biocompatibility etc. However, the development of zirconia is hindered due to its instability in long-term clinical observations such as the cracking ...

Processing and Properties of Zirconia Ceramics for Dental Applications

Low-temperature degradation of different zirconia ceramics for dental applications.

The aim of this investigation was to determine the influence of simulated ageing on the tetragonal-to-monoclinic phase transformation and on the flexural strength of a 3Y-TZP ceramic, compared to alumina toughened zirconia (ATZ) and ceria-stabilized zirconia (12Ce-TZP). Standardized disc specimens of each material were hydrothermally aged in steam at 134°C and 3bar for 0, 16, 32, 64 or 128h. Th...

Fracture resistance of implant- supported monolithic crowns cemented to zirconia hybrid-abutments: zirconia-based crowns vs. lithium disilicate crowns

PURPOSE The aim of this in vitro study was to investigate the fracture resistance under chewing simulation of implant-supported posterior restorations (crowns cemented to hybrid-abutments) made of different all-ceramic materials. MATERIALS AND METHODS Monolithic zirconia (MZr) and monolithic lithium disilicate (MLD) crowns for mandibular first molar were fabricated using computer-aided design...