Results 11 to 20 of about 4,365 (205)

Effects of Yttria Content and Margin Design on the Fracture Resistance of Monolithic Zirconia Crowns [PDF]

Journal of Functional Biomaterials
Background: Zirconia ceramics are generally used in monolithic restorations, and their microstructural, mechanical, and optical properties continue to improve.
Beyza Güney, Elif Yılmaz Biçer, Dilan Gizem Doğan, Merve Bankoğlu Güngör   +3 more
doaj   +2 more sources

Effect of Yttria Content on the Translucency and Masking Ability of Yttria-Stabilized Tetragonal Zirconia Polycrystal [PDF]

Materials, 2020
Translucent zirconia, manufactured by increasing the yttria content, offers improved translucency, but may have a negative effect on esthetic outcomes under clinical conditions such as discolored abutment because of the reflection of the underlying color.
Young-Eun Cho, Young-Jun Lim, Jung-Suk Han   +2 more
exaly   +3 more sources

Effects of various aging modes on the optical properties of zirconia with different yttria concentrations in coffee and tea [PDF]

Journal of Dental Sciences
Background/purpose: The esthetic performance of dental zirconia may be affected by both material composition and environmental exposure. This study aimed to evaluate how different aging conditions-hydrothermal aging and thermal cycling-influenced the ...
Chih-Wei Tseng, Chenmin Yao, Liang-Yu Wei, Pei-Wen Peng, Wei-Chun Lin   +4 more
doaj   +2 more sources

Room temperature plasticity of zirconia-yttria-titania ceramics: Experimental indications and structural modelling [PDF]

Processing and Application of Ceramics, 2022
Yttria-stabilized tetragonal zirconia (Y-TZP) ceramics have excellent mechanical properties. However, such materials cannot undergo plastic deformation at room temperature due to their high hardness and brittleness values, hindering machinability.
Ussui Valter, Lazar Dolores Ribeiro Ricci, de Lima Nelson Batista, Arata Anelyse, Ribeiro Fabio Negreiros, Dalpian Gustavo Martini, Marchi Juliana, Paschoal José Octavio Armani   +7 more
doaj   +1 more source

Cytotoxicity and biocompatibility of high mol% yttria containing zirconia [PDF]

Restorative Dentistry & Endodontics, 2020
ObjectivesYttria-stabilized tetragonal phase zirconia has been used as a dental restorative material for over a decade. While it is still the strongest and toughest ceramic, its translucency remains as a significant drawback.
Gulsan Ara Sathi Kazi, Ryo Yamagiwa
doaj   +1 more source

Thermal Conductivity of Yttria-Gadolinia Solid Solution Optical Ceramics in the Temperature Range 50–300 K

Inorganics, 2022
This study looked at the thermal conductivity of translucent (Y1−xGdx)2O3 (where 0 ≤ x ≤ 1) solid solution ceramics in the temperature range from 50 K to 300 K.
Stanislav Balabanov, Timofey Evstropov, Dmitry Permin, Olga Postnikova, Alexander Praded, Pavel Popov   +5 more
doaj   +1 more source

Investigation of the Applicability of Y₂O₃–ZrO₂ Spherical Nanoparticles as Tribological Lubricant Additives

Lubricants, 2022
Long-term environmental goals will motivate the automotive industry, component suppliers, and lubricating oil developers to reduce the friction of their tribosystems to improve overall efficiency and wear for increased component lifetime.
Ádám I. Szabó, Álmos D. Tóth, Máté Zs. Leskó, Hajnalka Hargitai   +3 more
doaj   +1 more source

Surface Damage and Microstructure Evolution of Yttria Particle-Reinforced Tungsten Plate during Transient Laser Thermal Shock

Metals, 2022
Tungsten and its alloys are considered to be the most nominated plasma-facing materials in fusion reactors, which will be exposed to enormously rigorous conditions such as thermal load, plasma exposure, and neutron radiation.
Daya Ren, Ya Xi, Jie Yan, Xiang Zan, Laima Luo, Yucheng Wu   +5 more
doaj   +1 more source

Tribological Properties of the Nanoscale Spherical Y₂O₃ Particles as Lubricant Additives in Automotive Application

Lubricants, 2022
The continuous tribological development of engine lubricants is becoming more and more vital due to its fuel efficiency improvement and lifetime increasing potential.
Álmos D. Tóth, Ádám I. Szabó, Máté Zs. Leskó, Jan Rohde-Brandenburger, Rajmund Kuti   +4 more
doaj   +1 more source

Survey of the mechanical and physical behaviors of yttria-stabilized zirconia from multiple dental laboratoriesWhy Is This Important?

JADA Foundational Science, 2023
Background: When selecting zirconia for a dental restoration, laboratory prescriptions often refer to high strength and high translucency. In this survey, zirconia specimens were ordered from various dental laboratories for posterior (high strength) and ...
Yifeng Liao, PhD, Max Gruber, BSE, Henry Lukic, BSE, Jim McLees, CDT, Si Chen, PhD, Alan Boghosian, DDS, Spiro Megremis, MS, PhD   +6 more
doaj   +1 more source