Results 1 to 10 of about 162,305 (348)

On the Dielectric Constant of Zirconia and Lime-zirconia [PDF]

Zeitschrift für Naturforschung A, 1971
Abstract The dielectric constant of monoclinic zirconia and of lime-zirconia (up to a CaO content of 20% mole) has been measured at 25 °C by the powder method. For pure ZrO2 the D.C. is 13.5, while for lime-zirconia a non linear dependence on the CaO content has been observed in the measured range, with a maximum at about 14% mole CaO ...
Giorgio Cremante, Sergio Pizzini, Manlio Sanesi, Vittoriano Wagner   +3 more
openaire   +3 more sources

Zirconia as a support for catalysts: influence of additives on the thermal stability of the porous texture of monoclinic zirconia [PDF]

, 1991
A single-phase monoclinic zirconia (the thermodynamically stable modification up to a temperature of 1170°C), having a specific surface area of 67 m2g¿1 and a well-developed mesoporous texture, has been prepared by gel-precipitation followed by ...
Burggraaf, A.J., Burggraaf, Anthonie, Doesburg, E.B.M., Doesburg, E.B.M., Mercera, P.D.L., Mercera, P.D.L., Ross, J.R.H., Ross, J.R.H., van Ommen, J.G.   +8 more
core   +31 more sources

Adaptation assessment of all-ceramic self-glazed versus conventional zirconia implant abutments [PDF]

BMC Oral Health
Background Self-glazed zirconia (SGZ), produced using a novel additive 3D gel deposition technology, has recently been employed to fabricate zirconia abutments.
Rong Li, Yushu Liu, Jinxing Sun, Rui Zhang   +3 more
doaj   +2 more sources

Current classification of zirconia in dentistry: an updated review [PDF]

PeerJ, 2023
Zirconia, a crystalline oxide of zirconium, holds good mechanical, optical, and biological properties. The metal-free restorations, mostly consisting of all-ceramic/zirconia restorations, are becoming popular restorative materials in restorative and ...
Suchada Kongkiatkamon, Dinesh Rokaya, Santiphab Kengtanyakich, Chaimongkon Peampring   +3 more
doaj   +2 more sources

Microstructural Analysis of Terbium Doped Zirconia and Its Biological Studies

Condensed Matter, 2022
Zirconia has its place in the biomedical industry because of its mechanical strength, bio-inertness, and physiochemical properties. Zirconia was synthesized and doped with Terbium (Tb), a lanthanide that was reported to show a photoluminescence property,
Suganthan Veerachamy, Sivakumar Rajagopal   +1 more
doaj   +1 more source

Zirconia Translucency and Cement Systems as Factors Influencing the Zirconia-Titanium and Zirconia-Zirconia Shear Bond Strength [PDF]

The International Journal of Oral & Maxillofacial Implants, 2019
To evaluate the bonding ability of self-adhesive and dual-cure resin cement systems applied to zirconia materials of different translucency in combination with each other and with titanium.Computer-aided design/computer-assisted manufacture (CAD/CAM) disks of three different zirconia materials (Zenostar MO 0 [medium opacity], MT 0 [medium translucency],
Carrabba M., Nagasawa Y., Parrini S., Doldo T., Wood D., Ferrari M.   +5 more
openaire   +5 more sources

An In-vitro evaluation of retention force of All PEEK, all zirconia and zirconia–PEEK telescopic attachment for mandibular overdentures

Journal of Pharmacy and Bioallied Sciences, 2023
The objective of this study is to compare retention capacity of mandibular implant-supported overdenture with all zirconia, zirconia–PEEK, and all PEEK telescopic attachments. Sixty acrylic resin models of mandible were used. Telescopic attachment system
Gujjalapudi Mahalakshmi, Thandra Naga Sruthi, Pradeep Kumar Sharma, Muneendra Thandava, Nirban Mitra, Nirav G Patel, Abhigyan Manas   +6 more
doaj   +1 more source

Thermal decomposition and reaction sintering for synthesis of mullite-zirconia composite using kaolin, γ-alumina and zirconia [PDF]

Cerâmica, 2021
The refractory materials used in the wall of the furnaces for glass melting can be prepared from mullite-zirconia composite material. The composite of mullite/zirconia was synthesized from Iraqi kaolin, γ-alumina, and zirconia using thermal decomposition
M. A. Aswad, S. H. A. Alfatlawi, A. N. Saud   +2 more
doaj   +2 more sources

Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis [PDF]

, 2020
Various protocols are available to preclinically assess the fracture resistance of zirconia oral implants. The objective of the present review was to determine the impact of different treatments (dynamic loading, hydrothermal aging) and implant features (
Bethke, Annalena, Burkhardt, Felix, Kohal, Ralf‐Joachim, Pieralli, Stefano, Spies, Benedikt Christopher, Stein‐Lausnitz, Manja von, Vach, Kirstin   +6 more
core   +1 more source

Effect of surface treatments on biaxial flexural strength, fatigue resistance, and fracture toughness of high versus low translucency zirconia

BMC Oral Health, 2022
Background Mechanical surface treatments can deteriorate the mechanical properties of zirconia. This study evaluated and compared the biaxial flexural strength, fracture toughness, and fatigue resistance of high translucency (HT) to low translucency (LT)
Alaaeldin Elraggal, Moustafa Aboushelib, Islam M. Abdel Raheem, Rania R. Afifi   +3 more
doaj   +1 more source