Results 1 to 10 of about 11,609 (254)

ZIRCONIA CERAMICS: PROPERTIES AND CLASSIFICATION

open access: yesČeská Stomatologie a Praktické Zubní Lékařství, 2022
Introduction and aim: Zirconia is currently the most commonly used representative of polycrystalline dental ceramics. It is highly valued for its mechanical properties: hardness, strength and toughness.
T Kovalský   +6 more
doaj   +1 more source

Three-dimensional finite element analysis of anterior two-unit cantilever resin-bonded fixed dental prostheses [PDF]

open access: yes, 2015
The aim of this study was to evaluate the influence of different framework materials on biomechanical behaviour of anterior two-unit cantilever resin-bonded fixed dental prostheses (RBFDPs).
De Moor, Roeland   +6 more
core   +4 more sources

Microstructure and impedance spectroscopy of 3YTZP/SWNT ceramic nanocomposites [PDF]

open access: yes, 2015
This work provides new insights on microstructure and electrical properties of 3 mol% Y2O3–ZrO2 (3YTZP) composites with 0.5, 1, and 1.5 vol% single walled carbon nanotubes (SWNTs).
Domínguez Rodríguez, Arturo   +4 more
core   +1 more source

Aging of monolithic zirconia dental prostheses: Protocol for a 5-year prospective clinical study using ex vivo analyses

open access: yesContemporary Clinical Trials Communications, 2016
Background: Recent introduction of computer-aided design/computer-aided manufacturing (CAD/CAM) monolithic zirconia dental prostheses raises the issue of material low thermal degradation (LTD), a well-known problem with zirconia hip prostheses.
Vinciane Koenig   +9 more
doaj   +1 more source

Optical properties of translucent zirconia: A review of the literature

open access: yesThe EuroBiotech Journal, 2019
Translucent monolithic zirconia is the newest option of zirconia-based ceramics, which aimed to substitute the opaque classic yttria-stabilized tetragonal zirconia polycrystal (Y-TZPs) in more demanding esthetic cases.
Manziuc Manuela-Maria   +6 more
doaj   +1 more source

Effect of silica fume additions on the hydration behaviour of calcium aluminates [PDF]

open access: yes, 1997
In the recent refractory castables technology, the calcium aluminate cement is being replaced in increasing proportion by very fine matrix components, such as silica fume and colloidal alumina.
Fumo, Daniel A., Segadães, Ana M.
core   +1 more source

EEG pattern for stress condition during listening rock music and binaural beat sound [PDF]

open access: yes, 2022
Music has a great effect on human brain and brainwaves. It is already proven that listening to music such as binaural beat sound and rock music increases the beta band power that is associated to increase the stress condition during listening. This
Fuad, N.   +3 more
core  

EXPLORING THE USE OF PULSED ERBIUM LASERS TO RETRIEVE A ZIRCONIA CROWN FROM A ZIRCONIA IMPLANT ABUTMENT [PDF]

open access: yes, 2020
Removal of zirconia crowns, commonly used as cement-retained implant fixed restorations, can be challenging. Conventional methods of crown removal are time consuming and often leave irreparable damage to the crown, which can be costly to patients and ...
Elkharashi, Ahmed
core   +1 more source

Superconductivity devices: Commercial use of space [PDF]

open access: yes
A YBCO thick film containing 20 percent Ag2O with a T(sub c) of 86.8 K and J(sub c) of 108 A/sq cm was obtained. The film was fabricated by a two-step firing process, i.e., firing the film at 1000 C for 10 minutes and annealing at 970 C for 30 minutes ...
Furman, Eugene   +3 more
core   +4 more sources

Analysis of Flexural Strength and Contact Pressure After Simulated Chairside Adjustment of Pressed Lithium Disilicate Glass-Ceramic [PDF]

open access: yes, 2018
Statement of problem Research evaluating load-to-failure of pressed lithium disilicate glass-ceramic (LDGC) with a clinically validated test after adjustment and repair procedures is scarce.
Berzins, David W.   +3 more
core   +1 more source

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