Results 1 to 10 of about 80,900 (240)
Post-irradiation vickers microhardness development of novel resin composites [PDF]
Materials Research, 2010 The aim of this study was to evaluate the effect of post-irradiation dry aging at different periods of time on Vickers microhardness of some dental composites based on various resin matrices.
Hanadi Yousif Marghalani
doaj +5 more sources
Effect of Indenter Load on Vickers Microhardness and Indentation Depth of One Resin Composite. [PDF]
Materials (Basel)The load and size of the indentation may affect the hardness value. This study investigated the effect of the indentation size on the microhardness of one resin-based composite (RBC). Metal molds 4 mm deep and 12 mm in diameter were filled with Tetric EvoCeram Bulk Fill (Ivoclar) and light-cured for 10 s using a broad-spectrum LED curing light.
Price RB, Sullivan B.
europepmc +4 more sources
Effects of repeated preheating on polymerization shrinkage kinetics and Vickers microhardness of resin composites: an in vitro study [PDF]
BMC Oral HealthBackground Preheating resin composites can reduce viscosity and improve handling; however, resin syringes or capsules used in multiple clinical applications may undergo repeated heating and cooling.
Daeyeong Kim +3 more
doaj +2 more sources
Crystals, 2021 The present study aims to clarify the impact of Cu addition and aging conditions on the microstructure development and mechanical properties of Sn-9Zn binary eutectic alloy.
Heba Y. Zahran +3 more
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Effect of Simulated Oral Aging on Surface Roughness and Microhardness of Bulk-Fill Composite Resins [PDF]
Dentistry JournalIntroduction: The goal of this study was to evaluate the influence of combined artificial aging protocols on the surface roughness and Vickers microhardness of bulk-fill resin composites, compared with a nanofilled composite used as a reference ...
Alexandru Mihai Tănasă +7 more
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Effect of Machining Conditions on Temperature and Vickers Microhardness of Chips during Planing
Metals, 2022 For the machining of long and narrow surfaces and when processing multiple pieces, planing technology is used, the productivity of which can be higher than that of milling, although it is relatively slow machining. The article aims to study the degree of influence of the geometry of the tool (the angle of cutting-edge inclination and the angle of the ...
Peter Pavol Monka +2 more
exaly +5 more sources
Temperature dependence of vickers microhardness and creep of InBi single crystals
Bulletin of Materials Science, 1982 Variation of Vickers microhardness of InBi single crystals with temperature has been studied. Loading time dependence of the microhardness at different temperatures has been used for the creep study in the temperature range 30° – 85°C. The activation energy for creep has been evaluated and the results are discussed.
C F Desai
exaly +3 more sources
Microhardness and structural changes in calcium silicate-based sealers after short-term exposure to EDTA and organic acids: an in vitro study [PDF]
BMC Oral HealthBackground Calcium silicate–based root canal sealers are widely used because of their bioactivity and favorable properties. However, their resistance to chemical challenge and the role of chelating and acidic solutions in retreatment remain unclear. This
Sedanur Candas Gulcu +3 more
doaj +2 more sources
Vickers microhardness of oxidized and nonoxidized porous silicon [PDF]
2014 North African Workshop on Dielectic Materials for Photovoltaic Systems (NAWDMPV), 2014 In this work we present our recent investigation on characterizing mechanical properties of porous silicon (PS) by using instrumented micro-indentation. Hardness and elastic modulus for oxidized and nonoxidized PS were measured. Experimental results revealed that hardness and elastic modulus are significantly lower than that of silicon substrate and ...
RAHMOUN, Khadidja +6 more
openaire +2 more sources
Journal of Pharmacy and Bioallied Sciences, 2021 Aim: The aim of this study was to assess the effect of acidic beverages on color stability and microhardness of various esthetic restorative materials. Materials and Methods: A total of 60 samples were included in the present study.
Aradhana Rathod +6 more
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