Low Viscosity Composite
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. The use of a liner under different bulk-fill resin composites: 3D GAP formation analysis by x-ray microcomputed tomography
Abstract Gap formation of composite resin restorations is a serious shortcoming in clinical practice. Polymerization shrinkage stress exceeds the tooth-restoration bond strength, and it causes bacterial infiltration within gaps between cavity walls and the restorative material. Thus, an intermediate liner application with a low elastic modulus has been advis
J. Appl. Oral Sci.. Publicado em: 25/11/2019
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2. Physical and Mechanical Properties of Polymer Composites with High Content of Wastes Including Boron
In this study, we studied the physical and mechanical properties of polymer composite with wastes that incorporating boron. The polymer composites were produced with epoxy based resin and wastes as mineral additive. The wastes were added to mixtures in different ratio by replacing the resin from 0 to 66% by weight. Slump-flow and viscosity tests are carried
Mat. Res.. Publicado em: 04/12/2015
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3. Flexible thermoplastic composite of Polyvinyl Butyral (PVB) and waste of rigid Polyurethane foam
This study reports the preparation and characterization of composites with recycled poly(vinyl butyral) (PVB) and residue of rigid polyurethane foam (PUr), with PUr contents of 20, 35 and 50 wt %, using an extruder equipped with a Maillefer single screw and injection molding. The components of the composites were thermally characterized using differential sc
Polímeros. Publicado em: 2015-04
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4. Characterization of cassava starch processed in an internal mixer
An internal mixer connected to a torque rheometer was used to investigate the effect of moisture content (13.2 to 46.8 g.100g- 1), rotation speed (13.2 to 46.8 rpm) and processing temperature (53.2 to 86.8 °C), applying a factorial central composite design, on the specific mechanical energy (SME), pasting viscosity and crystallinity of cassava starch. Torqu
Polímeros. Publicado em: 2013
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5. Polymerization Shrinkage and Flexural Modulus of Flowable Dental Composites
Linear polymerization shrinkage (LPS), flexural strength (FS) and modulus of elasticity (ME) of low-viscosity resin composites (Admira Flow™, Grandio Flow™/VOCO; Filtek Z350 Flow™/3M ESPE; Tetric Flow™/Ivoclar-Vivadent) was evaluated using a well-established conventional micro-hybrid composite as a standard (Filtek Z250™/3M ESPE). For the measureme
Materials Research. Publicado em: 2010-09
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6. Melhoria da resistência no estado fundido do polipropileno através da adição de nanoargilas. / Improvement of melt strenght of polypropylene by the addition of nanoclays.
In this work nanocomposites of polypropylene (PP) were obtained. Three types of PP with melt flow rates of 1,5; 2,2 e 37,9 g/10min (230ºC/216kg) were used. The PP with the largest melt flow rate is a product modified with peroxide. These samples were mixed with PP masterbatch Nanocor nanoMax ®-PP. Masterbatch in different concentrations ranging from 3 to 1
Publicado em: 2010
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7. Bond strength of a resin cement to dentin using the resin coating technique
The aim of this study was to evaluate the bond strength of a resin cement to dentin using different adhesive systems (AS) in the presence or absence of a low-viscosity composite liner (Protect Liner F - PLF) applied over the bonded dentin. The adhesive systems selected were: AdheSE/Vivadent (AD); Clearfil Protect Bond/Kuraray (CP); One-Up Bond F/Tokuyama (OU
Brazilian Oral Research. Publicado em: 2008-09
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8. Fenómenos de relajación interfacial en compuestos epoxi/aluminio
Interfacial dielectric relaxation has been studying in composite materials made with epoxy resin and aluminum. Electric modulus, which has been proposed for the description of systems with relaxation process, presents advantages in comparison to the classic approach of the real and imaginary part of dielectric permittivity. In composite polymer materials, re
Matéria (Rio de Janeiro). Publicado em: 2008-06
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9. Productions of ethyl esters (biodesel) from the transesterification core residual oil / Produção de esteres etilicos (biodiesel) a partir da transesterização basica de oleo residual
Biodiesel (alkyl esters) is a clean burning fuel derived from a renewable lipid feedstock such as vegetable oil or animal fat. It is biodegradable, non-inflammable, nontoxic and produce much lesser COx, sulfur dioxide and unburned hydrocarbons than petroleum-based diesel. Nowadays, due to the price of virgin oil such as soybean and canola oils, the use of lo
Publicado em: 2008
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10. Effect of a bonding resin layer associated with a self-etching adhesive system on the bond strength of indirect restorations
The aim of this study was to evaluate the influence of a low-viscosity bonding resin applied over a self-etching adhesive system on the microtensile bond strength (µTBS) of indirect restorations. Comparisons were made using One Up Bond F (OB) self-etching adhesive system, Single Bond (SB) one-bottle adhesive system and Scotchbond Multi Purpose Plus (SMP) bo
Journal of Applied Oral Science. Publicado em: 2007-04
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11. EFEITO DO NAOCL A 10% E DA APLICAÇÃO DO COMPÓSITO DE BAIXA VISCOSIDADE SOBRE A RESISTÊNCIA DA UNIÃO COMPÓSITO-DENTINA / EFFECT OF NAOCL 10% AND THE APPLICATION OF LOW-VISCOSITY COMPOSITE ON RESIN/DENTIN BOND STRENGTH
The aim of this in vitro study was to evaluate the effect of NaOCl 10% as dentin superficial treatment and the application of a low-viscosity composite (LVC) on resin/dentin bond strength. Twenty human third molars, recently extracted, were divided in four experimental groups. The occlusal enamel was removed with a mechanical grinder perpendicular to the lon
Publicado em: 2006
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12. Avaliação da resistencia de união de sistemas adesivos e cimentos resinosos a dentina e aos compositos restauradores / Evaluation of bond strength of adhesive systems and resincements to dentin and restorative composites
The current concept of bonding to hard dental tissues is based on the infiltration of adhesive systems in enamel and dentin, in the so-called hybridization process. While the enamel bond has been considered a reliable procedure due to its uniform composition, bonding to dentin continues to present challenges. The objective of this study was to assess and dis
Publicado em: 2006