The Effectiveness of Alumina Powder on Carious Dentin Removal

10.2341/05-48 ◽  
2006 ◽  
Vol 31 (3) ◽  
pp. 371-376 ◽  
Author(s):  
C. Motisuki ◽  
L. M. Lima ◽  
E. S. Bronzi ◽  
D. M. P. Spolidorio ◽  
L. Santos-Pinto
Keyword(s):  
Aluminum Oxide ◽  
Clinical Relevance ◽  
Alumina Powder ◽  
Air Abrasion ◽  
Sound Structure ◽  
Oxide Particles

Clinical Relevance When an air abrasion system is used, 27 and 50 μm aluminum oxide particles remove carious dentin with maximum preservation of sound structure when compared to 125 μm particles.

Y-TZP Ceramics: Key Concepts for Clinical Application

10.2341/08-79 ◽  
2009 ◽  
Vol 34 (3) ◽  
pp. 344-351 ◽  
Author(s):  
A. N. Cavalcanti ◽  
R. M. Foxton ◽  
T. F. Watson ◽  
M. T. Oliveira ◽  
M. Giannini ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Oxide ◽  
Clinical Application ◽  
Clinical Relevance ◽  
Air Abrasion ◽  
Adhesion Mechanism ◽  
Key Concepts ◽  
Oxide Particles

Clinical Relevance The description of the chief characteristics of Y-TZP ceramics provides a background for its clinical application. Both the improved mechanical properties and the lower bonding ability of Y-TZP materials are frequently suggested by the literature. Nevertheless, the combination of air abrasion with aluminum oxide particles (silanated or not), followed by materials containing special reactive monomers, seems to be a potential adhesion mechanism.

Influence of Air Abrasion and Long-term Storage on the Bond Strength of Self-etching Adhesives to Dentin

10.2341/06-61 ◽  
2007 ◽  
Vol 32 (3) ◽  
pp. 217-224 ◽  
Author(s):  
F. M. G. França ◽  
A. J. S. Santos ◽  
J. R. Lovadino
Keyword(s):  
Bond Strength ◽  
Aluminum Oxide ◽  
Clinical Relevance ◽  
Air Abrasion ◽  
Long Term Storage ◽  
Term Storage ◽  
Over Time

Clinical Relevance The adhesiveness of self-etching systems, used with aluminum oxide air abrasion to dentin, decreases over time.

scholarly journals Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3090
Author(s):  
Anita Ptiček Siročić ◽  
Ana Rešček ◽  
Zvonimir Katančić ◽  
Zlata Hrnjak-Murgić
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Water Vapor ◽  
Aluminum Oxide ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Mechanical And Thermal Properties ◽  
Oxide Compound ◽  
Bilayer Films ◽  
Oxide Particles

The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value.

INFLUENCE OF MORPHOLOGY, PHASE COMPOSITION AND CONTENT OF ALUMINUM OXIDE PARTICLES ON RHEOLOGICAL PROPERTIES OF AQUEOUS SUSPENSIONS BASED ON THEM

2021 ◽  
pp. 14-25
Author(s):  
V.A. Voronov ◽  
◽  
A.S. Chainikova ◽  
Yu.E. Lebedeva ◽  
D.M. Tkalenko ◽  
...  
Keyword(s):  
Phase Composition ◽  
Aluminum Oxide ◽  
Aggregate Stability ◽  
Plasma Chemical ◽  
Buffer Solution ◽  
Sedimentation Stability ◽  
Aqueous Suspensions ◽  
Oxide Powders ◽  
Ceramic Samples ◽  
Oxide Particles

This work investigated the chemical and phase composition of aluminum oxide powders obtained by various methods (alkoxide, codeposition, thermal and plasma-chemical). The physicomechanical, thermophysical and thermal properties of ceramic samples based on them have been determined. The effect of the nature of the aluminum oxide powder and the production process parameters on the sedimentation stability of aqueous suspensions based on them has been determined. The influence of the content of particles of aluminum oxide, buffer solution and rheological additives on the viscosity, sedimentation and aggregate stability of aqueous suspensions has been determined.

scholarly journals Evaluation of ceramic flexural strength of a cobalt-chromium alloy subjected to airborne particle abrasion and tungsten inert gas welding

2019 ◽  
Vol 18 ◽  
pp. e191443
Author(s):  
Laise Pena Braga Monteiro ◽  
Issae Sousa Sano ◽  
Suelen Reis Cunha ◽  
Eliza Burlamaqui Klautau ◽  
Bruno Pereira Alves
Keyword(s):  
Flexural Strength ◽  
Aluminum Oxide ◽  
Tig Welding ◽  
Inert Gas ◽  
Bending Test ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Airborne Particle ◽  
Ceramic Bond ◽  
Oxide Particles

Aim: The aim of this study was to evaluate the influence of tungsten inert gas (TIG) welding and airborne particle abrasion using aluminum oxide particles on the flexural strength of a joint between ceramic and cobalt-chromium alloys. Methods: The specimens were cast and welded using TIG, then divided into 6 groups (n = 10) and subjected to blasting with 250 μm, 100 μm, and 50 μm aluminum oxide particles. Ceramic systems were applied to the central part of all specimens. A three-point bending test using a velocity of 0.5 mm/m was performed on the specimens to measure flexural strength. Data were analyzed using two-way analysis of variance and Tukey’s test. Results: TIG welding demonstrated the lowest resistance compared with the non-welded groups. Airborne particle abrasion using 250 μm aluminum oxide particles demonstrated greater resistance in the welded groups (p < 0.05). Mixed faults were found in all specimens. Conclusion: TIG welding decreased the bond strength, and the particle size of aluminum oxide did not affect the metal-ceramic bond in groups without TIG welding.

Electrical properties of aluminum oxide ceramics film on a metal

2021 ◽  
Vol 2 ◽  
pp. 59-65
Author(s):  
I. Yu. Bakeev ◽  
◽  
Yu. A. Burachevsky ◽  
E. S. Dvilis ◽  
D. B. Zolotukhin ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electrical Properties ◽  
Aluminum Oxide ◽  
Relative Dielectric Constant ◽  
Plasma Electron ◽  
Electron Beam Evaporation ◽  
Original Method ◽  
Alumina Powder ◽  
Oxide Ceramic ◽  
Temperature Dependences

The work is devoted to the study of electrical properties (temperature dependences of conductivity, relative dielectric constant, dielectric loss tangent for various frequencies) of an aluminum oxide ceramic film deposited on a metal substrate. The film was created by the original method of electron beam evaporation of a non-conductive target, consisting of a compressed alumina powder, using a plasma electron source, which is able to reliably operate in the fore-vacuum pressure range (5 – 100 Pa). Such increased working gas pressures ensures the generation of a dense beam plasma near the target, which neutralizes the charging of a non-conducting target and thereby provides its effective melting and electron beam evaporation.

STATIC VOLUME–PRESSURE RELATIONS IN GUINEA PIG LUNGS AFTER INHALATION OF ALUMINUM OR IRON OXIDE PARTICLES AND BRONCHODILATOR AEROSOLS

1963 ◽  
Vol 41 (2) ◽  
pp. 461-468 ◽  
Author(s):  
E. Robillard ◽  
Y. Alarie
Keyword(s):  
Iron Oxide ◽  
Guinea Pig ◽  
Aluminum Oxide ◽  
Previous Exposure ◽  
Iron Oxide Particles ◽  
Antagonistic Action ◽  
Low Concentration ◽  
Oxide Particles ◽  
The Right ◽  
Volume Pressure Curves

Volume–pressure curves obtained from isolated atelectatic guinea pig lungs under normal controlled conditions are compared with those obtained from animals having inhaled fine aluminum or iron oxide particles. After particles inhalation, the inflation curves are deviated to the right, showing a constricting effect. Previous exposure to low concentration of isoproterenol aerosol fails to reverse completely the constricting effect induced by a prior inhalation of aluminum oxide particles although in combination with diphenhydramine or at a higher concentration an antagonistic action appears. Cyproheptadine aerosolation also prevents the constricting effect of inhaled aluminum oxide particles The constricting effect of iron oxide was not prevented by those dilating aerosols at concentrations used.

Mechanical properties of aged yttria-stabilized tetragonal zirconia polycrystal after abrasion with different aluminum oxide particles

2020 ◽  
Vol 124 (5) ◽  
pp. 599-604
Author(s):  
Suelem C. Barreto ◽  
Renally B.W. Lima ◽  
Flávio Henrique B. Aguiar ◽  
Carlos Tadeu D. Santos ◽  
Luís Alexandre M.S. Paulillo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Oxide ◽  
Tetragonal Zirconia ◽  
Oxide Particles ◽  
Tetragonal Zirconia Polycrystal
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