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tungsten/càries dental
L'enllaç es desa al porta-retalls
Pàgina 1 des de 211 resultats
In vitro comparison of ceramic burs and conventional tungsten carbide bud burs in dentin caries excavation.
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OBJECTIVE
To compare the efficiency of ceramic burs with that of conventional tungsten carbide bud burs in vitro.
METHODS
Fifty extracted teeth were split in the center of a caries lesion. The 100 specimens were randomly divided into 5 groups. Five clinicians were asked to excavate 10 teeth each:
Softening due to Grain Boundary Cavity Formation and its Competition with Hardening in Helium Implanted Nanocrystalline Tungsten.
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The unique ability of grain boundaries to act as effective sinks for radiation damage plays a significant role in nanocrystalline materials due to their large interfacial area per unit volume. Leveraging this mechanism in the design of tungsten as a plasma-facing material provides a potential
Tungsten source integrated cavity output spectroscopy for the determination of ambient atmospheric extinction coefficient.
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Broadband integrated cavity output spectroscopy (ICOS) utilizing an incoherent tungsten lamp as a spectroscopic source is described. This novel approach has been termed W-ICOS. The technique has been applied to make quantitative measurements of Rayleigh scattering by carbon dioxide between 570 and
Efficiency of the polymer bur SmartPrep compared with conventional tungsten carbide bud bur in dentin caries excavation.
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SmartPrep is a rotating instrument for dentin caries excavation made from a special polymer. The manufacturer's product information stated that SmartPrep removes carious dentin selectively. This in vitro study compared the efficiency of SmartPrep with conventional tungsten carbide bud burs. Fifty
Comparison of dentin caries excavation with polymer and conventional tungsten carbide burs.
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OBJECTIVE
To compare the effectiveness of polymer burs (SmartPrep, SS White) and conventional carbide burs in removing dentin caries.
METHODS
Thirty extracted permanent teeth were assigned to 2 groups according to the caries removal technique. One experienced clinician performed all excavation
Comparative study of a beenakker cavity and a surfatron in combination with electrothermal evaporation from a tungsten coil for microwave plasma optical emission spectrometry (MIP-AES).
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Microwave induced plasmas, sustained in a Beenakker resonator and a surfatron, respectively, are used to excite vapours released by electrothermal evaporation of solutions from a tungsten coil. The analytical figures of merit of AES for two easily volatilized elements (Cu, Cd) are compared for argon
A comparison of diamond and tungsten carbide burs for preparing endodontic access cavities through crowns.
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High contrast thermal deflectometry using long-wave infrared time modulated integrating cavity source.
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We introduce a scalable temporally modulated long-wave infrared source design. The design makes use of an array of resistive blackbody heating elements which radiate into a custom aluminum integrating cavity. The output of the box is a rectangular slit, built to match the traditional tungsten ribbon
Efficacy of Caries Removal by Carie-Care and Erbium-doped Yttrium Aluminum Garnet Laser in Primary Molars: A Scanning Electron Microscope Study.
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UNASSIGNED
To compare and evaluate morphological changes and bacterial deposits in primary carious molars after caries excavation with Carie-Care, erbium-doped yttrium aluminum garnet (Er:YAG) laser, and round tungsten carbide bur.
UNASSIGNED
Thirty human carious primary molars extracted for
Confined interfacial micelle aggregating assembly of ordered macro-mesoporous tungsten oxides for H 2 S sensing
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Porous tungsten oxides (WO3) have been implemented in various application fields including catalysis, energy storage and conversion, and gas sensing. However, the construction of hierarchically ordered porous WO3 nanostructures with highly crystalline frameworks remains a great challenge. Herein, a
Cavity convergence angles for direct composite inlays.
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Direct composite inlays may sometimes be difficult to remove from the cavity following primary polymerization. The aim of this work was to find the lowest cavity convergence angle (taper) which would allow reliable inlay removal. Cavity finish and cavity size were also taken into account.
Strong light-matter interaction in tungsten disulfide nanotubes.
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Transition metal dichalcogenide materials have recently been shown to exhibit a variety of intriguing optical and electronic phenomena. Focusing on the optical properties of semiconducting WS2 nanotubes, we show here that these nanostructures exhibit strong light-matter interaction and form
Dual-wavelength passively Q-switched Nd:GYSGG laser by tungsten disulfide saturable absorber.
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A dual-wavelength passively Q-switched Nd:GYSGG laser using vacuum evaporating tungsten disulfide (WS2) as a saturable absorber was demonstrated for the first time to the best of our knowledge. The WS2 saturable absorber was prepared simply by evaporating nanometer
High-damage-resistant tungsten disulfide saturable absorber mirror for passively Q-switched fiber laser.
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In this paper, we demonstrate a high-damage-resistant tungsten disulfide saturable absorber mirror (WS2-SAM) fabricated by magnetron sputtering technique. The WS2-SAM has an all-fiber-integrated configuration and high-damage-resistant merit because the WS2 layer is
Exploring the active site of the tungsten, iron-sulfur enzyme acetylene hydratase.
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The soluble tungsten, iron-sulfur enzyme acetylene hydratase (AH) from mesophilic Pelobacter acetylenicus is a member of the dimethyl sulfoxide (DMSO) reductase family. It stands out from its class as it catalyzes a nonredox reaction, the addition of H₂O to acetylene (H-C≡C-H) to form acetaldehyde
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