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Deformation behaviour of aged coronal dentin
(Blackwell Munksgaard, 2018-06-01)
Objective: This study aimed to identify the changes in the time-dependent deformation response of coronal dentin with ageing and its relationship with changes in chemical composition. Background: The structural behaviour ...
Thermo-oxidative aging of bitumen
(Taylor and Francis Ltd., 2018-07-03)
Thermo-oxidative bitumen ageing has been commonly recognised as the main cause of asphalt cracking. The effect of thermo-oxidative ageing level on bitumen has been studied in this work by means of a simple and effective ...
Subsídios para elaboração e utilização de material didático de língua estrangeira para a terceira idade
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Linguística - PPGL, 2009-03-13)
Through the investigation of the English teaching/learning process in two third age universities and through the presentation of the profile of these age group learners, we aim to provide contributions for further developing ...
COLOR STABILITY of SEALED COMPOSITE RESIN RESTORATIVE MATERIALS AFTER ULTRAVIOLET ARTIFICIAL AGING and IMMERSION IN STAINING SOLUTIONS
(Mosby-elsevier, 2011-04-01)
Statement of problem. The color alteration of resin-based materials is one of the most common reasons to replace esthetic dental restorations.Purpose. This study assessed the influence of surface sealant (Biscover) on the ...
Free radical entrapment and crystallinity of resin composites after accelerated aging as a function of the expiration date
(Elsevier B.V., 2014-08-01)
This study evaluated the spin concentration and the crystallinity in different classifications of dental composites as a function of the material condition (new, aged and expired). Specimens were obtained according to the ...
Effect of artificial aging on the surface roughness and microhardness of resin-based materials
(2016-03-01)
This study sought to verify the effects of aging on the surface roughness (Ra) and microhardness (Knoop hardness number [KHN]) of resin-based restorative materials protected with a surface sealer. Disc specimens of 2 ...
Effects of staining and artificial aging on optical properties of gingiva-colored resin-based restorative materials
(Springer, 2022-07-26)
Objectives To evaluate CIEDE2000/CIELAB differences in color (Delta E-00/Delta E-ab), and translucency parameter (Delta TP00/Delta TPab), and gloss of gingiva-colored resin-based restorative materials upon staining/aging. ...
Long-term performance of refurbished amalgam restorations: 10-year follow-up
(Quintessence Publishing Co., Ltd, 2017)
Effect of accelerated aging on the microhardness and color stability of flexible resins for dentures
(2010-01-01)
Acrylic resins have been widely used due to their acceptable esthetics and desirable characteristics such as easy handling, good thermal conductivity, low permeability to oral fluids and color stability. Flexible resins ...
New constraints on ages of glasses proposed as reference materials for fission-track dating
(Wiley-Blackwell, 2007-06-01)
New analyses have been performed in order to enhance the data-set on the independent ages of four glasses that have been proposed as reference materials for fission-track dating. The results are as follows. Moldavite - ...