Results 101 to 110 of about 11,609 (254)

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

Zirconia toughened SiC whisker reinforced alumina composites small business innovation research [PDF]

The objective of this phase 1 project was to develop a ceramic composite with superior fracture toughness and high strength, based on combining two toughness inducing materials: zirconia for transformation toughening and SiC whiskers for reinforcement ...
Lee, C. T., Loutfy, R. O., Stuffle, K. L., Withers, J. C.   +3 more
core   +1 more source

Effect of Successive Bleaching Treatments Followed by Staining on Color, Whiteness, and Translucency of Polymer‐Based CAD‐CAM Materials

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate differences in color, whiteness, and translucency of CAD‐CAM materials after successive bleaching treatments and coffee immersion. Materials and Methods Lava Ultimate (LU) and VITA Enamic (VE) were divided into four groups (n = 12): untreated (control), 35% hydrogen peroxide (WH), 10% carbamide peroxide (OP), or WH ...
Alejandro Cardenas Ramos, Bruno Arruda Mascaro, José Maurício dos Santos Nunes Reis, Lívia Nordi Dovigo, María M. Pérez, Renata Garcia Fonseca   +5 more
wiley   +1 more source

“Digitally Oriented Materials”: Focus on Lithium Disilicate Ceramics [PDF]

, 2016
The present paper was aimed at reporting the state of the art about lithium disilicate ceramics. The physical, mechanical, and optical properties of this material were reviewed as well as the manufacturing processes, the results of in vitro and in vivo ...
Ferrari, M, Leone, R, Mangano, FG, Sorrentino, R, Zarone, F   +4 more
core   +4 more sources

Comparison of stress distribution around splinted and nonsplinted implants with different crown height space in posterior mandible: A finite element analysis study

Journal of Prosthodontics, EarlyView.
Abstract Purpose The purpose of this finite element analysis (FEA) study was to analyze the stress distribution on prosthetic components of splinted and nonsplinted prostheses, bone, and implants with different crown height space (CHS). Materials and Methods Mandibular posterior segment was modeled with no resorption at the second premolar site and ...
Hamiyet Güngör Erdoğan, Mert Keleş, Burak Yılmaz   +2 more
wiley   +1 more source

Effect of sintering cycle on the strength and translucency of multilayered zirconia

Journal of Prosthodontics, EarlyView.
Abstract Purpose A newly introduced sintering protocol promises to offer higher translucency while not significantly compromising the flexural strength of the material. However, the effect of the novel sintering protocol has not been thoroughly validated.
Kedith Sawangsri, Steven Makowka, Sompop Bencharit, Hyeongil Kim   +3 more
wiley   +1 more source

The Effect of a High Thermal Gradient on Sintering and Stiffening in the Top Coat of a Thermal Barrier Coating (TBC) System

, 2003
Superalloy substrates coated with plasma sprayed CoNiCrAlY bond coats and yttria-stabilized zirconia top coats have been subjected to a high heat flux in a controlled atmosphere chamber.
Clyne, T.W., Golosnoy, I.O., Tsipas, S.A.   +2 more
core  

Effect of build orientation on the fabrication trueness of additively manufactured implant‐supported complete arch interim fixed prostheses

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate how build orientation affects the fabrication trueness of additively manufactured implant‐supported complete arch prostheses by comparing them to subtractively manufactured high‐impact polymer‐based prostheses. Materials and Methods An edentulous maxillary model with four implants at canine and first molar regions ...
Amir H. Nejat, Mehmet Esad Güven, Gülce Çakmak, Burak Yilmaz, Mustafa Borga Donmez   +4 more
wiley   +1 more source

Peri‐implant tissue definition and registration with a 3D‐printed emergence profile former on titanium stock healing abutment: A dental technique and clinical report

Journal of Prosthodontics, EarlyView.
Abstract Recent focus has shifted toward refining the soft tissue emergence profile to enhance aesthetics, support peri‐implant health, and ensure long‐term success. Traditionally, titanium stock healing abutments or chairside‐customized abutments were used to shape peri‐implant tissues and develop the emergence profile for implant‐supported prostheses.
Francisco X. Azpiazu‐Flores, Tisama Siyootagrai, Ahmed Elfana, Chao‐Chieh Yang, Dean Morton, Wei‐Shao Lin   +5 more
wiley   +1 more source

Assessment of impact of a control die on marginal fidelity of milled zirconia crown copings for finishing and polishing

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluated and compared the marginal fidelity of milled zirconia copings before and after finishing and polishing with and without a control die. Materials and Methods This prospective multicenter in vitro trial involved two methods regularly used in two clinics for hybrid and full‐digital workflows.
Marwan Al Akkad, John Sorensen, Omar Hamadah, Iva Voborna, Marek Matoušek, Radek Mounajjed   +5 more
wiley   +1 more source