Results 71 to 80 of about 3,464 (211)

Effect of Implant Design on Fracture Resistance, Mode, and Crystal Structure of One‐ and Two‐Piece Zirconia Implants With Ceramic or Titanium Abutment Screws: An In Vitro Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To evaluate the fracture resistance, fracture modes, and crystalline phase changes of zirconia one‐piece implants (OPI) and bone‐level (BLTPI) or tissue‐level, two‐piece implants (TLTPI), with ceramic (C) or titanium (T) abutment screws after dynamic preloading in a moist environment.
Abdulaziz Gul, Evaggelia Papia, Siamak Eqtesadi, Magnus Anderson, Jonas P. Becktor, Per Vult von Steyern   +5 more
wiley   +1 more source

Atomically ordered solute segregation behaviour in an oxide grain boundary

Nature Communications, 2016
Solute segregation is challenging to experimentally identify at the atomic scale. Here, the authors report the direct observation of atomic site-dependent solute segregation behaviour in an yttria-stabilized zirconia grain boundary by atomic-resolution ...
Bin Feng, Tatsuya Yokoi, Akihito Kumamoto, Masato Yoshiya, Yuichi Ikuhara, Naoya Shibata   +5 more
doaj   +1 more source

Improving fatigue resistance of translucent 4Y‐PSZ zirconia through glass gradation

European Journal of Oral Sciences, EarlyView.
Abstract To evaluate the effect of graded glass infiltration on the fatigue behavior and mechanical reliability of translucent 4Y‐PSZ zirconia before and after hydrothermal aging, disc‐shaped specimens were fabricated by uniaxial pressing and divided into control and glass‐graded groups (n = 36/group).
Felipe Machado Souza, Larissa M. M. Alves, Edisa O. Sousa, Tiago Moreira Bastos Campos, Giovana Assis Marcolino, Mariana Miranda de Toledo Piza, Rainã S. Dias, Satoshi Yamaguchi, Petra C. Gierthmuehlen, Lukasz Witek, Paulo G. Coelho, Estevam A. Bonfante, Ernesto B. Benalcazar‐Jalkh   +12 more
wiley   +1 more source

Peri‐Implant Soft Tissue Response to Monolithic Zirconia Versus Porcelain‐Fused‐to‐Metal Implant Crowns: Histological and Clinical Outcomes of an RCT

Journal of Clinical Periodontology, EarlyView.
ABSTRACT Objective To assess the peri‐implant soft‐tissue and hard‐tissue response to monolithic zirconia (ZrO2) compared to porcelain‐fused‐to‐metal implant crowns (PFMs). Methods This report constitutes a pre‐specified secondary analysis of this RCT.
Yifan Zhang, Sven Mühlemann, Aspasia Pachiou, Stephanie Astrid Stalder, Ronald E. Jung, Ye Lin, Daniel S. Thoma   +6 more
wiley   +1 more source

Microscopic ion migration in solid electrolytes revealed by terahertz time-domain spectroscopy

Nature Communications, 2019
Here the authors expand the application scope of terahertz spectroscopy to the characterization of electrolyte materials. Based on the measurement of the conductivity of yttria-stabilized zirconia in the terahertz frequency range, unprecedented insight ...
Tomohide Morimoto, Masaya Nagai, Yosuke Minowa, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani   +6 more
doaj   +1 more source

Translucency of 3D‐Printed 3Y‐ and 5Y‐Doped Zirconia

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate and compare the translucency of 3D‐printed zirconia materials: 3Y tetragonal zirconia polycrystal (3Y‐TZP) and 5Y partially stabilized zirconia (5Y‐PSZ). Material and Methods 3D‐printed 5Y‐PSZ and 3Y‐TZP materials fabricated using digital light processing (DLP) were investigated.
Sebastian Hetzler, Clemens Schmitt, Peter Rammelsberg, Stefan Rues, Andreas Zenthöfer   +4 more
wiley   +1 more source

The Effect of Zirconia Material and the Height of the Ceramic Coping on the Strength of Hybrid Ti-Ceramic Abutments

Dentistry Journal
The existing scientific literature lacks comprehensive information regarding the influence of zirconia crown height on debonding and fracture of the ceramic restorations on titanium base abutments.
Aikaterini Anastasaki, Pranit Bora, Stefanos Kourtis, Chin Chuan Fu   +3 more
doaj   +1 more source

Effects of Substructure Color and Restoration Thickness on the Final Color of Ultra‐Translucent Zirconia Ceramics

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This in vitro study aimed to evaluate the effects of substructure color and restoration thickness on the final color of shade‐gradient ultra‐translucent zirconia ceramics. Material and Methods A total of 180 flat‐shaped ultra‐translucent zirconia specimens (5Y‐PSZ) with thicknesses of 0.4, 0.6, and 0.8 mm (n = 60) were fabricated and
Elif Yılmaz Biçer, Merve Bankoğlu Güngör, Cemal Aydın   +2 more
wiley   +1 more source

Marginal and Internal Fit of Zirconia Crowns with Varying Yttria Content and Finish Line Configurations: An In Vitro Study

Applied Sciences
Aim: This in vitro study aimed to evaluate the marginal and internal fit of three monolithic CAD/CAM zirconia ceramics with different Y-TZP contents, prepared with chamfer and rounded shoulder finish lines. Methods.
Dilan Gizem Doğan, Ömer Suat Yaluğ
doaj   +1 more source

Systematic Review Evaluating the Influence of Veneering Design on the Clinical Outcome of All‐Ceramic Implant‐Supported 3–4 Units and Full Arch Fixed Dental Prostheses

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To systematically assess survival, failure, and complication rates of all‐ceramic implant‐supported monolithic and micro‐veneered FDPs (i‐FDPs) in partially/completely edentulous patients compared to veneered restorations. Materials and Methods An electronic search identified prospective clinical studies on all‐ceramic i‐FDPs with at
Shaza Bishti, Stefan Wolfart, Marcel Zwahlen, Lukas Waltenberger   +3 more
wiley   +1 more source