Results 1 to 10 of about 226,462 (213)

Developing definitions of conventional hardness tests for use by National Metrology Institutes [PDF]

open access: yesMeasurement: Sensors, 2021
This paper describes the process used by the Consultative Committee for Mass and Related Quantities - Working Group on Hardness (CCM-WGH) of the International Committee of Weights and Measures (CIPM) to develop international definitions of the ...
S. Low   +4 more
doaj   +2 more sources

DETERMINATION OF ELECTRODEPOSITION HARDNESS BY ANALYTICAL MODELING PART I - Ni-P COATINGS OBTAINED BY VARYING THE ELABORATION TIME - [PDF]

open access: yesFiabilitate şi Durabilitate, 2012
Results obtained from Vickers hardness tests were used for analytical modeling models Buckle, Jönsson, Hogmark. Ni-P electrodeposition were obtained by varying the elaboration time.
PASĂRE Minodora Maria
doaj   +2 more sources

The Effect of Four Disc-shaped Polishing Systems on the Surface Roughness and Micro-hardness of Clearfil AP-X Esthetics Composite Resin [PDF]

open access: yesInternational Journal of Scientific Research in Dental and Medical Sciences, 2022
Background and aim: Polishing techniques are important in preserving the beauty and success of composite restorations. This study evaluated the surface roughness and micro-hardness of CLEARFIL AP-X Esthetics composite polished by different polishing ...
Fatemeh Nezhadnasrollah   +4 more
doaj   +1 more source

Comparison between a bulk-fill resin-based composite and three luting materials on the cementation of fiberglass-reinforced posts [PDF]

open access: yesRestorative Dentistry & Endodontics, 2023
ObjectivesThis study verified the possibility of cementing fiberglass-reinforced posts using a flowable bulk-fill composite (BF), comparing its push-out bond strength and microhardness with these properties of 3 luting materials.Materials and ...
Carlos Alberto Kenji Shimokawa   +5 more
doaj   +1 more source

EFFECT OF IMMERSION AND INCORPORATION OF POLYVINYL CHLORIDE ON THE FLEXURE STRENGTH AND MICRO HARDNESS OF POLY METHYLACRYLATE DENTURE BASE RESIN

open access: yesKhyber Medical University Journal, 2022
OBJECTIVE:  To find the effect of artificial saliva, water and different percentages of polyvinyl chloride (PVC) on the flexural strength and microhardness of heat cure polymethylmethacrylate (HC-PMMA) denture base resin.
Shahid Ilyas, Amjad Hanif
doaj   +1 more source

Long-term effect of acidic pH on the surface microhardness of ProRoot mineral trioxide aggregate, Biodentine, and total fill root repair material putty

open access: yesDental Research Journal, 2021
Background: The purpose of this study was to compare the microhardness values of ProRoot mineral trioxide aggregate (MTA), Biodentine, and total fill root repair material (TF-RRM) Putty at varying pH and times.
Koral Bayraktar   +3 more
doaj   +1 more source

Effect of fluoride varnish on glass ionomer microhardness changes in endogenous acid erosion challenge

open access: yesBiomaterial Investigations in Dentistry, 2021
Objective This study aimed to assess the effect of fluoride varnish on glass ionomer microhardness changes after endogenous acid erosion challenge.
Fatemeh Moharramkhani   +4 more
doaj   +1 more source

Evaluation of the Efficacy of CPP-ACP Remineralizing Mousse in MIH White and Yellow Opacities—In Vitro Vickers Microhardness Analysis

open access: yesDentistry Journal, 2022
Remineralization of tooth enamel can be partially achieved by the application of a casein phosphopeptides and amorphous phosphate (CPP-ACP) complex. However, evidence to support its effectiveness in Molar-incisor-hypomineralization (MIH)-affected teeth ...
Inês Cardoso-Martins   +4 more
doaj   +1 more source

An Innovative Real-Time Dosimeter for Radiation Hardness Assurance Tests

open access: yesPhysics, 2022
The study of the effects of the radiation dose on devices and materials is a topic of high interest in several fields, including radiobiology, space missions, microelectronics, and high energy physics.
Luigi Campajola   +5 more
doaj   +1 more source

Effects of three commercial toothpastes incorporating “chitosan, casein phosphopeptide-amorphous calcium phosphate, sodium monofluorophosphate, and sodium fluoride” on remineralization of incipient enamel caries in the primary dentition: A preliminary in vitro study

open access: yesDental Research Journal, 2020
Background: Given the importance of primary dental caries, assessment of new preventive/therapeutic materials is necessary. In light of the scarcity of such studies on the role of new agents in primary dentition, this study assessed the efficacy of three
Leila Basir   +3 more
doaj   +1 more source

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