Results 51 to 60 of about 22,022,044 (223)

Böjhållfasthet i flerskiktad Y-TZP före och efter termocykling

, 2020
Syfte: Syftet med föreliggande pilotstudie är att undersöka böjhållfastheten hos flerskiktad Y-TZP bestående av lager med olika materialsammansättning, 3Y-TZP, 4Y-TZP och 5Y-TZP före och efter termocykling. Material och metod: Från två flerskiktade Y-TZP-
Taavo Olander, Erika, Aili, Jonna
core   +1 more source

Comparación del comportamiento mecánico a altas temperaturas entre nanocerámicos de Y-TZP y materiales submicrométricos

Revista de Metalurgia, 2001
Se han realizado experiencias de fluencia en compresión a alta temperatura en muestras de óxido de circonio parcialmente estabilizado con 2,7 mol % de óxido de itrio (Y-TZP), con distintos tamaños de grano para ver la influencia que tiene este parámetro ...
F. Gutiérrez-Mora, M. Jiménez-Melendo, A. Domínguez-Rodríguez   +2 more
doaj   +1 more source

Influence of Simulated Clinical Finishing/Polishing Protocols and Thermocycling on the Surface Integrity and Mechanical Performance of 3Y‐TZP

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Purpose This in vitro study evaluated the influence of different finishing and polishing protocols associated with thermocycling aging on surface roughness, flexural strength, and topography of 3Y‐TZP. Methods and Materials Two hundred and eighty‐six specimens (16 × 3 × 1 mm) were distributed into 22 groups (n = 13) according to the finishing ...
Cecília Alves de Sousa, Henrico Badaoui Strazzi‐Sahyon, Ariane Rodrigues Barion, Paulo Henrique dos Santos, Wirley Gonçalves Assunção   +4 more
wiley   +1 more source

Assessment of fit accuracy and retentive strength of additively manufactured zirconia crowns luted to Ti‐base abutments with different resin cements: An in vitro study

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study investigated the influence of cement gap size on the marginal and internal fit, and cement gap size and type on retention of additively manufactured zirconia (AM‐Z) crowns on titanium bases (Ti‐base). Materials and Methods A total of 135 zirconia crowns were designed with three different cement gap sizes: 20 µm, 30 µm, and ...
Rafat Sasany, Sultan Merve Uçar, Burak Yilmaz   +2 more
wiley   +1 more source

Mechanical and Tribological Properties of SPS-Sintered Y-TZP: The Effect of Sintering Temperature

Crystals
This work systematically investigates the influence of two spark plasma sintering (SPS) temperatures (1400 °C and 1600 °C) on the mechanical and tribological properties of two yttria-stabilized zirconia ceramics: 3 mol.% Y2O3 (3Y-TZP) and 1.5 mol.% Y2O3 (
Dávid Medveď, Jana Andrejovská, Viktor Puchý   +2 more
doaj   +1 more source

A digital workflow for full‐arch implant fixed prosthesis: Clinical application of a 3D‐printed polychromatic flangeless trial denture, anatomic bone reduction guide, and intraoral scanning for definitive prosthesis fabrication

Journal of Prosthodontics, EarlyView.
Abstract This clinical report presents a comprehensive digital workflow for rehabilitating a patient with maxillary terminal dentition using a full‐arch, implant‐supported fixed dental prosthesis (FP‐1). It highlights the integration of a 3D‐printed polychromatic flangeless trial denture and a customized anatomic bone reduction template, enabling ...
Weiqing Liu, Toshiki Nagai, Wei‐Shao Lin   +2 more
wiley   +1 more source

Effects of artificial aging on the biaxial flexural strength of Ce-TZP/Al2O3 and Y-TZP after various occlusal adjustments

, 2017
The aim of this study was to determine the effect of aging on the biaxial flexural strength (BFS) of Ce-TZP/Al2O3 and Y-TZP after occlusal adjustment. NanoZr block (Ce-TZP/Al2O3 nanocomposite) and Katana zirconia block (Y-TZP) were prepared by milling ...
신유석, 심준성, 김종은, 김지환   +3 more
core   +1 more source

hADMSC-YTZP seeding improves peri-implant bone repair through increased expression of BMP-2, ALP, and OPG

Scientific Reports
Dental implant failure is frequently attributed to inadequate Peri-Implant Bone Repair, particularly in the case of certain implants. In this context, hADMSC has been shown to enhance the integration of Y-TZP dental implants.
Arif Rachman, Prihati Pujowaskito, Novita Indah Permatasari, Arfiyanti Arfiyanti, Indri Lakhsmi Putri   +4 more
doaj   +1 more source

Effects of gastric acid on surface roughness, microhardness, fracture strength, and color change of dental ceramics: A systematic review of in vitro studies

Journal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review evaluated the effects of simulated gastric acid (SGA) on surface and mechanical properties of dental ceramics to answer the research question: Does immersion in SGA alter the surface roughness, microhardness, fracture strength, and color of dental ceramics?
Geany Ferreira Rodrigues, Isaac Augusto Dantas Nogueira, Nicole Escórcio de Meneses, Ana Letícia Daniel Fontenele, Francisbênia Alves Silvestre, Ana Carolina Lima Moreira, Lívia Maria Sales Pinto Fiamengui, Karina Matthes de Freitas Pontes, Raniel Fernandes Peixoto   +8 more
wiley   +1 more source

Comparative study of physical properties of zirconia based dental ceramics [PDF]

, 2009
The aim of this project was to evaluate and compare the mechanical properties of commercial yttria partially stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics, which have generated interest in restorative dentistry because of their high ...
Pittayachawan, P, Pittayachawan, P.
core