Results 41 to 50 of about 23,616 (256)

Effect of Fluoride Gels on Microhardness and Surface Roughness of Bleached Enamel [PDF]

open access: yesThe Open Dentistry Journal, 2014
The effect of bleaching treatments containing added calcium and combined with neutral or acidic fluoride gels on tooth enamel was investigated in vitro through Knoop microhardness (KHN) and surface roughness (SR) measurements. A total of 60 bovine incisors were tested, including 30 for SR measurements and 30 for KHN measurements.
China, Ana L.P   +4 more
openaire   +2 more sources

Influence of Different Polishing Systems on Surface Roughness and Microhardness of Bulk-fill Resin-based Composites: An In Vitro Study [PDF]

open access: yesInternational Journal of Prosthodontics and Restorative Dentistry
Purpose: To evaluate the surface roughness (Ra) and microhardness of bulk-fill resin-based composites (RBCs) treated with different polishing and finishing systems.
Siti H Omar   +3 more
doaj   +1 more source

Effect of mouthrinses on surface microhardness of selected dental composites [PDF]

open access: yes, 2006
Objective: To compare the surface microhardness of composites(SpectrumÂ?TPH, Filtekâ??Z350, Ceramâ??X mono and Ceramâ??X duo-enamel shade) before and after immersion in alcohol containing mouthrinses (Listerine), alcohol-free mouthrinses (Oral-B) and ...
Ahmad, A., Abu Kasim, N.H.
core   +1 more source

MICRO VICKERS HARDNESS AND SURFACE ROUGHNESS OF Al-Cu UNS A92124/T851 ALLOY IN RELATION TO TURNING PARAMETERS: AN EXPERIMENTAL STUDY

open access: yesMateriali in Tehnologije
This study examines the effect of cutting speed and feed rate on the surface roughness and microhardness of UNS A92124-785 during CNC turning. The machined surfaces were evaluated in terms of surface roughness, microhardness, and corrosion behavior ...
Vellingiri Sakthivel   +3 more
doaj   +1 more source

New experimental zirconia-reinforced rice husk nanohybrid composite and the outcome of its surface roughness and microhardness in comparison with commercialized nanofilled and microhybrid composite resins

open access: yesContemporary Clinical Dentistry, 2021
Background: An ideal composite resin should demonstrate smooth surface after polishing and high hardness value to provide long-term success. Thus, this study aimed to compare the surface roughness and microhardness of new experimental zirconia-reinforced
Galvin Sim Siang Lin   +5 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

Efeito do pH de géis clareadores de alta concentração sobre a microdureza superficial do esmalte [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2010O objetivo deste estudo foi avaliar, in vitro, a microdureza do esmalte dental após a aplicação de ...
Soares, Sonia Mara
core  

Surface roughness, optical properties, and microhardness of additively and subtractively manufactured CAD-CAM materials after brushing and coffee thermal cycling. [PDF]

open access: yes
PURPOSE To evaluate the surface roughness, optical properties, and microhardness of additively or subtractively manufactured CAD-CAM materials after simulated brushing and coffee thermal cycling.
Abou-Ayash, Samir   +7 more
core   +1 more source

Effect of Machining Process on Surface Microhardness of Titanium Carbide Reinforced Aluminium LM6 Composite [PDF]

open access: yes, 2014
Due to the fact that material is being removed from the bulk material, all machining operations have some impact on the resulting surface integrity of the machined components.
Yusuf, Muhammad   +3 more
core   +4 more sources

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