Results 81 to 90 of about 2,517 (220)

Doping and synthesis method effect on zirconium silicate conductivity

Boletín de la Sociedad Española de Cerámica y Vidrio, 2006
The colour mechanisms of blue V- ZrSiO4 and yellow Pr- ZrSiO4 ceramic pigments which strongly depend on both fluorine addition and synthesis method, are still controversial.
Monrós, G., Badenes, J., Meseguer, S., Llusar, M., Martí, A. K., Gargori, C., Tena, M. A.   +6 more
doaj  

Assessing Color Inconstancy of CAD/CAM Materials: Influence of CIE White LED Illuminants and Substrate Shade

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To assess how the CIE white LED illuminants and substrate shade impact the color inconstancy of high‐translucency CAD/CAM materials. Materials and Methods From the spectral reflectance factors of Lava Ultimate‐LU, Grandio blocks‐GB, VITA Enamic‐VE, and VITA Mark II‐M specimens (n = 3/material) measured on nine background shades (ND1 ...
Bruno Arruda Mascaro, Maria Tejada‐Casado, Miguel Ángel Martínez‐Domingo, Renata Garcia Fonseca, José Maurício dos Santos Nunes Reis, María M. Pérez   +5 more
wiley   +1 more source

A contribution to integrated metal valorisation in zinc hydrometallurgy

Zaštita Materijala, 2014
Zinc belongs to the group of non-ferrous, widely used, metals. After aluminium and copper, zinc is the third non-ferrous metal according to the world production of 12.7 million tons in 2012.
D. Stanojević, Petrović L. Filipović
doaj   +1 more source

Ultra‐High‐Speed Sintering of 3.5Y‐TZP Zirconia: Time Reduction Without Compromising Translucency

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To assess, firstly, the impact of three sintering speeds on translucency and grain size of 3.5Y‐TZP zirconia (Katana HT) across clinically relevant thicknesses, and secondly, the effect of thermocycling on translucency. Materials and Methods Disc specimens were fabricated at six thicknesses (0.7–2.0 mm) and sintered using SLOW (7 h),
Tatiana Roman, Hamdi Jmal, Teissir Ben Ammar , Adrien Greffet, Marc Lenertz, Olivier Etienne   +5 more
wiley   +1 more source

Performance in Gingival Shade Selection Among Undergraduate Dental Students According to Gender: A Pilot Study

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Statement of Problem Color perception is a subjective process that can vary considerably among individuals. However, limited research has examined gingival shade selection according to observer gender. Objectives According to observer gender and gingival site, the objectives of this study were: (1) to compare subjective visual gingival shade ...
Manuel Antonio Sanchez de Martín, Adrian Curto Aguilera, Ana Maria Martín Casado, Cristina Gómez‐Polo   +3 more
wiley   +1 more source

INFLUENCE OF THE THERMAL TREATMENT ON THE COLOUR OF RO٠Al₂O₃ (R=Co, Ni) TYPE SPINEL PIGMENTS PREPARED BY A MODIFIED SOL – GEL METHOD

Studia Universitatis Babes-Bolyai Chemia, 2016
This paper presents the results obtained through the synthesis of spinel-structured, ceramic pigment nanopowders (CoAl2O4 si NiAl2O4), using a modified sol-gel method.
Firuţa GOGA, Roxana DUDRIC, Liliana-Antonela BIZO, Alexandra AVRAM, Thomas DIPPONG, Gabriel KATONA, Gheorghe BORODI, Andreea ANTON   +7 more
doaj  

Chromatic Signatures and Comprehensive Archaeometric Investigations of Prehistoric Ochre from Southern Romania

Heritage
This study investigates the composition, morphology and cultural significance of red pigment traces identified on bone pointed tools discovered in the Chalcolithic tell settlement of Pietrele–Măgura Gorgana, attributed to the Kodjadermen–Gumelnița ...
Rodica-Mariana Ion, Monica Mărgărit, Meda Toderaș, Sofia Slămnoiu-Teodorescu, Gabriel Vasilievici, Elvira Alexandrescu   +5 more
doaj   +1 more source

Biomechanics of the implant‐supported full arch fixed complete denture manufactured by milling and injection techniques: An experimental and FEA study

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study aims to characterize the mechanical properties of implant‐supported full arch fixed complete dentures manufactured by milling and injection techniques. Materials and Methods Twenty‐two samples with milling and injection manufacturing techniques were fabricated.
Mustafa Gürkan, Ovul Kumbuloglu, Makbule Heval Şahan, Mert Narin, Halis Kandaş, Yusuf Arman, Hasan Yildiz, Mahmut Pekedis   +7 more
wiley   +1 more source

Síntesis de pigmentos cerámicos mediante radiación microondas

Boletín de la Sociedad Española de Cerámica y Vidrio, 2007
Effect of microwave radiation on the development of ceramic pigments for tiles has been studied. Four compositions corresponding to different ceramic pigments (chrome-tin pink, cobalt-ferrite black, pink coral of iron in zircon and pink of chromium-tin ...
Calbo, J., Gargori, C., Sorlí, S., Badenes, J., Tena, M. A., Monrós, G.   +5 more
doaj  

Shade variability and stability in interim and definitive tooth‐colored resin‐based restorative materials: Comparing manufacturer‐claimed shades to a universal shade guide

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate the shade variability and stability of interim and definitive tooth‐colored restorative materials by comparing manufacturer‐claimed shades to a universal shade guide before and after thermocycling. Materials and Methods Eight commercially available tooth‐colored restorative materials were tested, including conventional ...
Amal Alfaraj, Toshiki Nagai, Wei‐Shao Lin   +2 more
wiley   +1 more source