Results 21 to 30 of about 91,863 (168)
Applied 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
Developing definitions of conventional hardness tests for use by National Metrology Institutes
Measurement: 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
Brazilian Oral Research, 2004 This study aimed at establishing the polymerization time of a microwave-cured acrylic resin (AcronTM MC), simultaneously processing 2, 4, and 6 flasks. Required time was measured according to the parameters: monomer release in water, Knoop hardness, and ...
Daniela Maffei Botega +4 more
doaj +1 more source
Effect of different light-curing devices and aging procedures on composite knoop microhardness
Brazilian Oral Research, 2009 The aim of this study was to evaluate the effect of light-curing devices (Halogen/HAL, Light Emitting Diodes/LED, Argon Laser/LAS and Plasma Arc/PAC) and aging procedures (Mechanical Cycling/MC, Thermal Cycling/TC, Storage/S, MC+TC and MC+TC+S) on the ...
Fernanda Regina Voltarelli +4 more
doaj +1 more source
Materials Research, 2007 This study investigated the influence of ethanol concentration on softening tests for cross-link density evaluation (microhardness) of dental composites. Specimens of Filtek Z100 (3M ESPE) were light-activated by standard or pulse-delay methods.
Rafael Ratto de Moraes +4 more
doaj +1 more source
International Journal of Dentistry, 2021 Objectives. To evaluate the microhardness of tooth enamel remineralized with enamel matrix protein solution as well as the shear bond strength of orthodontic brackets bonded to this surface. Materials and Methods.
Guilherme Genovez-Júnior +7 more
doaj +1 more source
Evaluation of the mechanical properties of different materials for manufacturing occlusal splints
Brazilian Oral Research, 2023 This study aimed to compare the mechanical properties of various occlusal plate materials by analyzing surface roughness, Knoop microhardness, flexural strength, and modulus of elasticity.
Danielly Mendonça GUIMARAES +4 more
doaj +1 more source
Lubricants, 2019 The production of vanadium and niobium carbides (VC and NbC) layers on AISI 8620, 8640, and 52100 steels may increase hardness and wear resistance of substrates. Thermochemical treatments were performed at 1000 °C for 2 and 4 h. The characterization
Rafael Magalhães Triani +5 more
doaj +1 more source
Do new matrix formulations improve resin composite resistance to degradation processes?
Brazilian Oral Research, 2013 The aim of this study was to determine the degradation resistance of three new formulations-silorane-, Ormocer- and dimer-acid-based materials-and compare them to the traditional dimethacrylate-based materials.
Andrea Soares Quirino da Silva Fonseca +4 more
doaj +1 more source
Influence of Cola-Based Soft Drinks on the Microhardness of Nanohybrid and Bulk Fill Composites [PDF]
Journal of Clinical and Diagnostic Research, 2019 Introduction: Bulk fill composites have been introduced in the past few years and appear to solve some of the disadvantages of conventional composites such as polymerisation contraction and the consequent marginal microinfiltration.
Luis Henrique Brugim +5 more
doaj +1 more source