Results 31 to 40 of about 98,119 (208)

Physicochemical characterization of two bulk fill composites at different depths [PDF]

open access: yesRestorative Dentistry & Endodontics, 2021
ObjectivesThis study analyzed the physical-chemical behavior of 2 bulk fill resin composites (BFCs; Filtek Bulk Fill [FBF], and Tetric-N-Ceram Bulk Fill [TBF]) used in 2- and 4-mm increments and compared them with a conventional resin composite (Filtek ...
Guillermo Grazioli   +4 more
doaj   +1 more source

Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin

open access: yesMaterials Research, 2009
The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin.
Chanya Chuenarrom   +2 more
doaj   +1 more source

Wear, friction, and microhardness of a thermal sprayed PET: poly (ethylene terephthalate) coating

open access: yesMaterials Research, 2009
The effects of combustion thermal spraying parameters namely combustion pressure, feeding rate, and carrier gas on the wear resistance, friction coefficient, and Knoop hardness of poly (ethylene terephthalate) (PET) films were investigated.
Rogério Antônio Xavier Nunes   +3 more
doaj   +1 more source

Atenolol increases dental mineralization in male offspring of treated hypertensive rats and normotensive rats [PDF]

open access: yesBrazilian Oral Research, 2020
This study evaluates how atenolol affects dental mineralization in offspring of female spontaneously hypertensive rats (fSHR) and normotensive Wistar rats (fW). fSHR and fW were treated with atenolol (100 mg/Kg/day, orally) during pregnancy and lactation.
Gracieli Prado ELIAS   +4 more
doaj   +1 more source

Effect of Ceramic Interposition and Post-activation Times on Knoop Hardness of Different Shades of Resin Cement.

open access: yesBrazilian Dental Journal, 2018
The aim of this study was to evaluate Knoop hardness of different shades of a resin cement light-cured directly or through ceramic discs, measured 15 min or 24 h after light exposure, and at different depths.
Marina Barrêto Pereira Moreno   +7 more
semanticscholar   +1 more source

Influence of the composition of different resin composites in the Knoop hardness and bond strength between tooth/restoration

open access: yesApplied Adhesion Science, 2014
The aim of this study was to evaluate the Knoop Hardness (KH) and bond strength (BS) among different resin composites. Three composites (Z100- 3 M/ESPE; Filtek Supreme-3 M/ESPE, Filtek Silorane-3 M/ESPE) were tested.
V. Bosquiroli   +4 more
semanticscholar   +1 more source

Effect of disinfection techniques on physical-mechanical properties of a microwave-activated acrylic resin

open access: yesPolímeros, 2018
The effects of disinfection by microwave irradiation and immersion in peracetic acid on the physical-mechanical properties of a microwave-activated acrylic resin were evaluated.
Carmen Beatriz Borges Fortes   +7 more
doaj   +1 more source

Hardness of Demineralized Enamel with the Application of Toothpaste Containing Green Tea Extract [PDF]

open access: yes, 2015
The aim of this study was to analyze the influence of toothpastes with or without green tea extract on the enamel hardness. Human teeth were used as specimens and surface enamel demineralization by soaking in 1% citric acid.
Indrani, D. J. (Decky)   +2 more
core   +2 more sources

Diamond turning of soft semiconductors to obtain nanometric mirror surfaces [PDF]

open access: yes, 2002
Diamond cutting is a viable alternative to grinding and polishing in the fabrication of high-quality soft semiconductors. Investigation of indentation provides useful information for understanding the practical diamond cutting process of brittle ...
Fang, Fengzhou Z.   +2 more
core   +1 more source

Wear resistance of nano-polycrystalline diamond with various hexagonal diamond contents [PDF]

open access: yes, 2012
Wear resistance of nano-polycrystalline diamond (NPD) rods containing various amounts of hexagonal diamond has been tested with a new method for practical evaluation of the wear–resistance rate of superhard ceramics, in addition to the measurements of ...
Irifune, T.   +6 more
core   +1 more source

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