Results 21 to 30 of about 7,059 (228)
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
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
Diamond turning of soft semiconductors to obtain nanometric mirror surfaces [PDF]
, 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
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
Journal of Materials Research and Technology, 2020 The prosthetic materials used in dentistry can generally be classified into different categories as measurement, restorative, cements and soft liner materials.
Nuran Dinçkal Yanıkoğlu +1 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
Brazilian Oral Research, 2011 The aim of this in vitro study was to evaluate the effect of different mouthwashes on superficial roughness and Knoop hardness of two resin composites. Eighty specimens (6 mm Ø and 2 mm height) were prepared and divided into eight experimental groups (n =
Diogo de Azevedo Miranda +4 more
doaj +1 more source
Effect of repeated disinfections by microwave energy on the physical and mechanical properties of denture base acrylic resins [PDF]
, 2009 The present study evaluated the effect of repeated simulated microwave disinfection on physical and mechanical properties of Clássico, Onda-Cryl and QC-20 denture base acrylic resins.
AZEVEDO, Douglas Duenhas de +4 more
core +1 more source