Results 51 to 60 of about 226,462 (213)
Effects of erosive challenge on the morphology and surface properties of luting cements
Revista de Odontologia da UNESPIntroduction Few studies investigated the surface properties of luting cements after erosive challenge. Objective To evaluate the surface roughness (Ra), Vickers hardness (VHN) and morphology of 4 luting cements after erosive challenge.
Brenna Louise Cavalcanti GONDIM +5 more
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The effects of material combination and surface roughness in lubricated silicon nitride/steel rolling contact fatigue [PDF]
, 2003 Four kinds of commercially finished 12.7 min HIPed silicon nitride bearing balls with surface roughness values R-a ranging from 0.002 to 0.016 mum were tested using a four-ball rolling configuration.
Ahmed, R, Hadfield, M, Kang, J
core +1 more source
Análise da dureza de um novo material restaurador para ART: Glass Carbomer
Revista de Odontologia da UNESPResumo Objetivo Este estudo avaliou a microdureza de dois materiais ionoméricos – Glass Carbomer (GC-GCP Dental) e Riva Light Cure (RL-SDI) ‒ em combinação com quatro unidades fotopolimerizadoras (Carbo LED lamp, GCP-Dental; Demi LED curing light, Kerr;
Célia Maria Condeixa de França LOPES +3 more
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Fracture toughness of three heat pressed ceramic systems
Brazilian Journal of Oral Sciences, 2018 Aim: The aim of this study was to evaluate fracture toughness by indentation method of three dental ceramics processed by heat pressing. The ceramics evaluated were fluorapatite glass ceramic (ZIR), glass ceramic containing leucite (POM) and leucite ...
Livia Fiorin +5 more
doaj +1 more source
C, 2020 In our previous studies, we have developed a wet process, denoted laser surface implanting (LSI), to synthesize a copper/single-walled carbon nanotube (Cu−SWCNT) metal nanocomposite as an implant onto the surface of a pure copper substrate.
Jay F. Tu, Nilesh Rajule, Sang Don Mun
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Microhardness of Root Canal Sealers at Different Canal Thirds: a Pilot In Vitro Study
eJournal of Oral Maxillofacial ResearchObjectives: The aim of this in vitro study was to evaluate the microhardness of various root canal sealers in the coronal, middle and apical thirds of the simulated root canals. Material and Methods: The study analysed the bioceramic root canal sealers (
Austėja Lukošiūtė +2 more
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A fiber detector radiation hardness test [PDF]
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2000 An intense 146 MeV/c pion beam was stopped inside a scintillating fiber detector made out of 12 planes with 16 pixels each, where every pixel consists out of 8 times 8 scintillating fibers of 500 mkm diameter dense packed. The detector was irradiated for 52 hours to more than 1 Mrad at its center.
Baehr, Juergen +3 more
openaire +3 more sources
, 2019 In this work the global and local mechanical properties of the magnetocaloric intermetallic LaFe11.2Si1.8 alloy are investigated by a combination of different testing and characterization techniques in order to shed light on the partly contradictory data
Eckert, Jurgen +6 more
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Dynamic nanoindentation testing: is there an influence on a material’s hardness?
Materials Research Letters, 2017 Modern nanoindentation devices are capable of dynamic experimentations, which allow us to exploit instrumented hardness tests extensively. Beside the assets of recording mechanical properties continuously over displacement, there are ongoing debates ...
A. Leitner, V. Maier-Kiener, D. Kiener
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Impact of adhesive and photoactivation method on sealant integrity and polymer network formation
Brazilian Oral Research, 2012 We evaluated the influence of photoactivation method and hydrophobic resin (HR) application on the marginal and internal adaptation, hardness (KHN), and crosslink density (CLD) of a resin-based fissure sealant.
Boniek Castillo Dutra Borges +6 more
doaj +1 more source