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Wyszukujesz frazę "Sokołowski, J/" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
The effect of heat treatment simulating porcelain firing processes on titanium corrosion resistance
Autorzy:
Sokołowski, G.
Rylska, D.
Sokołowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/306670.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
odporność korozyjna
polaryzacja potencjodynamiczna
napalanie porcelany
corrosion resistance
potentiodynamic polarization
porcelain firing
titanium-ceramic dental restorations
Opis:
Purpose: Corrosion resistance of titanium used in metal-ceramic restorations in manufacturing is based on the presence of oxide layer on the metal surface. The procedures used during combining metallic material with porcelain may affect the changes in oxide layers structure, and thus anticorrosive properties of metallic material. The aim of the study was an evaluation of potential changes in the structure and selected corrosion properties of titanium after sandblasting and thermal treatment applicable to the processes of ceramics fusion. Methods: Milled titanium elements were subjected to a few variants of the processes typical of ceramics fusion and studied in terms of resistance to electrochemical corrosion. The study included the OCP changes over time, measurements of Icorr, Ecorr and Rp as well as potentiodynamic examinations. Surface microstructure and chemical composition were analyzed using SEM and EDS methods. Results: The results obtained allow us to conclude that the processes corresponding to ceramic oxidation and fusion on titanium in the variants used in the study do not cause deterioration of its anticorrosive properties, and partially enhance the resistance. This depends on the quality of oxide layers structure. Conclusions: Titanium elements treated by porcelain firing processes do not lose their corrosion resistance.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 2; 93-102
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of modification with cetylpyridinium chloride – a potential cariogenic microflora inhibitor, on selected physical-mechanical properties of the water-activated glass-ionomer
Autorzy:
Kupka, T.
Nowak, J.
Szczesio, A.
Kopacz, K.
Fronczek-Wojciechowska, M.
Sokolowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/307009.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
twardość
wytrzymałość na rozciąganie
szkło
hardness
diametral tensile strength
glass-ionomer
Opis:
Teeth caries is one of predominant civilization diseases. Dental fillings with antimicrobial addition might allow prevention of secondary caries. The purpose of this study was to evaluate hardness and tensile strength of cetylpyridinium chloride modified water activated glass-ionomer cement. Methods: Samples with diameter of 6 mm and height of 3 mm made of water-activated glass-ionomer cement were control group (0.0%). Test groups were series of samples of the same dimensions, with addition of cetylpyridinium chloride antibacterial in concentrations of 0.5, 1.0, 1.5 and 2.0%. Two subgroups were prepared in each group to determine Vickers Hardness and Diametral Tensile Strength after 1 and 24 hours of sample storage in distilled water. Results: During hardness studies, no strong effect of antibacterial concentration on hardness of samples was observed. Higher hardness values after 24 hours were demonstrated for all groups, compared to the samples tested after 1 hour. The exception was the group with the addition of 1% cetylpyridinium chloride, in which no statistically significant differences were observed. Diametral Tensile Strength values for samples tested after 1 hour decreased with increasing antibacterial concentration. A similar relationship was noticed for samples tested after 24 hours. No statistically significant differences were found between test samples after 1 or 24 hours. Conclusions: There was no significant effect of cetylpyridinium chloride concentration on the hardness of the samples that significantly increased during the study. With the increase in antibacterial concentration a decrease in diametral tensile strength value was observed, but these values did not change over time.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 3; 19-24
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of resin composites modified with nanogold and nanosilver
Autorzy:
Sokołowski, J.
Szynkowska, M. I.
Kleczewska, J.
Kowalski, Z.
Sobczak-Kupiec, A.
Pawlaczyk, A.
Sokołowski, K.
Łukomska-Szymańska, M.
Powiązania:
https://bibliotekanauki.pl/articles/306218.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anogold
nanosilver
composite
diametral tensile strength
microhardness
ion release
light transmission
nanosrebro
kompozyty
mikrotwardość
transmisja światła
Opis:
Silver and gold have been used for centuries as antimicrobial agents. The aim of the study was to investigate diametral tensile strength, microhardness, ion release and light transmission of experimental resin composites. Flowable dental composite SDR (Dentsply, United Kingdom) was modified by nanogold, nanosilver and silica addition. The metal ion release, light transmission study, microhardness, Diametral Tensile Strength were evaluated. The experimental nanosilver-containing composites released significant amounts of Al, Si, Sr and Ba ions up to 30 days, and negligible silver ion amounts. Significant Ag ion release occurred in nanosilver- and nanogoldmodified composite. Resin composites modified with nanogold and nanosilver deposited on silica carrier exhibit lower light transmission and have opaque appearance. All experimental composites exhibited higher microhardness in comparison to non-modified resin composites. Diametral Tensile Strength of the experimental composites was comparable to the control group.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 1; 51-61
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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