Internal accuracy of digitally fabricated cross-arch yttria-stabilized tetragonal zirconia polycrystalline prosthesis

Transparent nanocrystalline yttria-stabilized-zirconia calvarium prosthesis.

UNLABELLED Laser-based diagnostics and therapeutics show promise for many neurological disorders. However, the poor transparency of cranial bone (calvaria) limits the spatial resolution and interaction depth that can be achieved, thus constraining opportunity in this regard. Herein, we report preliminary results from efforts seeking to address this limitation through use of novel transparent cr...

Characteristics of yttria stabilized tetragonal zirconia powder used in optical fiber connector ferrule

The tetragonal to monoclinic (t ! m) phase transformation during low temperature ( 100 8C) degradation (LTD) of yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) sintered in air at different temperatures was investigated. It is found that the sintering temperature affected the density, crystalline phase and microstructure of the sintered body, as well as the LTD behavior. Also, the ons...

Computational Modelling Study of Yttria-stabilized Zirconia

Composite resin to yttria stabilized tetragonal zirconia polycrystal bonding: comparison of repair methods.

PURPOSE The purpose of the current study was to evaluate different approaches for bonding composite to the surface of yttria stabilized tetragonal zirconia polycrystal (Y-TZP) ceramics. METHODS One hundred Y-TZP blocks were embedded in acrylic resin, had the free surface polished, and were randomly divided into 10 groups (n=10). The tested repair approaches included four surface treatments: t...

Effect of high-temperature aging on the thermal conductivity of nanocrystalline tetragonal yttria-stabilized zirconia

The thermal conductivity of yttria-stabilized zirconia (YSZ) thermal barrier coatings increases with high-temperature aging. This common observation has been attributed to the densification of the coatings as porosity sinters out and pores and cracks spheroidize to minimize their surface energy. We show that the thermal conductivity of fully-dense 3 mol.% Y2O3 stabilized zirconia (3YSZ) also in...