Results 61 to 70 of about 22,022,044 (223)

Preparación y densificación de monolitos cerámicos nanoestructurados de Y-TZP por Sol-gel

Boletín de la Sociedad Española de Cerámica y Vidrio, 1999
Y-TZP seeded gel monoliths have been prepared by a sol-gel method based on the coprecipitation of Zr4+ and Y3+ precursors as hydroxides and the stabilisation of the suspension in pure ethanol with a disc turbine.
Tartaj, J., Fernández, J. F., Moure, C., Lachowski, E., Durán, P.   +4 more
doaj  

Does treatment‐induced surface roughness of 3 mol% yttria‐stabilized tetragonal zirconia polycrystals influence the wear of opposing restorative materials? An in vitro study

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study aimed to investigate whether different surface treatments applied to 3 mol% yttria‐stabilized tetragonal zirconia polycrystals (3Y‐TZP), with comparable mean roughness (Ra) values, result in comparable values of additional surface roughness parameters, and to evaluate the influence of zirconia surface topography on vertical ...
Aline Stieper, Sebastian Wille, Matthias Kern, Maximiliane Amelie Schlenz, Hans‐Jürgen Wenz   +4 more
wiley   +1 more source

Indentation size effect of Y-TZP dental ceramics [PDF]

Dental Materials, 2014
The purpose of this study was to investigate and analyze the indentation size effect (ISE) in Vickers hardness of monolithic yttria partially stabilized zirconia (Y-TZP) dental ceramics without and with the addition of dental dye A3. The ISE is analyzed using the Mayer law, a proportional specimen resistance (PSR) model and a modified proportional ...
Marijana Majić Renjo, Lidija Ćurković, Sanja Štefančić, Danko Ćorić   +3 more
openaire   +2 more sources

Effects of high‐speed sintering on the translucency and color of dental zirconia with different shades and yttria contents

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluated the effects of high‐speed sintering on the translucency and color of various yttria‐stabilized zirconia (YSZ) compositions and identified factors influencing these properties to improve clinical predictability. Materials and Methods A total of 144 disc‐shaped specimens fabricated from 3YSZ, 4YSZ, and 5YSZ pucks in ...
Zidu Zeng, Nupur Patel, Yijing Su, Yu Zhang   +3 more
wiley   +1 more source

Processing and properties of Y-TZP/Al₂O₃ composites

, 1993
The processing and property measurement of Y-TZP/Al2O3 ceramic-ceramic composites was investigated. The wet chemical synthesis route was adopted for the preparation of 3Y-TZP matrix dispersed with Al2O3 in three different volume fractions ...
Dalvi, P. Y., Upadhyaya, D. D., Dey, G. K.   +2 more
core   +1 more source

Retention characteristics of individually milled bar systems with customized patrices: An in vitro comparison of electroplated and friction‐based retention concepts

Journal of Prosthodontics, EarlyView.
Abstract Purpose This in vitro study examined the initial and long‐term retention behavior of individually milled bar (IMB) systems combined with customized patrices (CPs), contrasting electroplated patrices (EP), and friction pin patrices (FPP) concepts.
Helene Bacher, Sebastian Hinz, Tobias Bensel, Daniel Voigt, Dean Morton, Arne F. Boeckler   +5 more
wiley   +1 more source

Efeito do tratamento de superfície na resistência de união entre porcelana e uma cerâmica à base de zircônia

Cerâmica
Resumo A substituição do metal utilizado como infraestrutura de restaurações protéticas pela cerâmica policristalina à base de zircônia tetragonal estabilizada por ítria (Y-TZP) resultou em dúvidas sobre a qualidade de união entre as cerâmicas de ...
E. Lodi, F. Marks, M. Borba
doaj   +1 more source

Effect of ceramic thickness, grinding, and aging on the mechanical behavior of a polycrystalline zirconia

Brazilian Oral Research, 2017
Monolithic restorations of Y-TZP have been recommended as a restorative alternative on prosthetic dentistry as it allows a substantial reduction of ceramic thickness, which means a greater preservation of tooth structure.
Rodrigo Diniz PRADO, Gabriel Kalil Rocha PEREIRA, Marco Antonio BOTTINO, Renata Marques de MELO, Luiz Felipe VALANDRO   +4 more
doaj   +1 more source

Clinical performance of ultratranslucent monolithic zirconia posterior crowns compared with lithium disilicate crowns: A pilot, randomized, double‐blind, controlled clinical trial

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate, through a pilot, randomized, double‐blind, controlled clinical trial, the clinical performance of ultratranslucent monolithic zirconia (UTZr) compared to lithium disilicate (LD) posterior crowns after 24 months of follow‐up.
Larissa Mendonça Miranda, Isabelle Helena Gurgel de Carvalho, Lidya Nara Marques de Araújo, Mutlu Özcan, Rodrigo Othávio de Assunção e Souza   +4 more
wiley   +1 more source

Surface structure and mechanical properties of impaction-modified Y-TZP

, 2014
Objectives. The objectives of the study were to describe the surface structure and the chemical surface composition of Y-TZP ceramics produced by using the modified additive technique and to evaluate the flexural strength of Y-TZP with or without surface
Andersson, Martin, Chrcanovic, B. R., Papia, Evaggelia, Chrcanovic, Bruno,, Papia, Evaggelia,, Jimbo, Ryo, von Steyern, P. V., Papia, E., Chrcanovic, Bruno, Vult von Steyern, Per, Jimbo, Ryo,, Jimbo, R., Vult von Steyern, Per,, Papia, E.,, Andersson, Martin,, Chrcanovic, B. R.,, von Steyern, P. V.,   +16 more
core   +1 more source