Bond Number
Mostrando 13-24 de 264 artigos, teses e dissertações.
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13. Influence of Thermal Cycles Number on Bond Strength of Metallic Brackets to Ceramic
Resumo O objetivo neste estudo foi avaliar o efeito de diferentes números de ciclos térmicos na resistência da união de braquetes metálicos à cerâmica feldspática usando resina composta. Vinte e cinco cilindros de cerâmica foram condicionados com ácido fluorídrico a 10% por 60 s e duas camadas de silano. Braquetes foram fixados nos cilindros usand
Braz. Dent. J.. Publicado em: 2017-04
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14. SÍNTESE DE DERIVADOS DE FENANTRIDINONAS POR ARILAÇÃO DIRETA. CARACTERIZAÇÃO DOS ESPECTROS DE ABSORÇÃO E EMISSÃO DE EXEMPLOS REPRESENTATIVOS
The phenanthridinone heterocyclic system has attracted considerable attention in recent years due to the diverse array of physical, chemical and pharmacological properties demonstrated by natural and synthetic derivatives. As a consequence there has been considerable development of synthetic methodology for the synthesis of this and related heterocyclic ring
Quím. Nova. Publicado em: 2016-04
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15. Mechanism of Hop-Derived Terpenes Oxidation in Beer
Terpenes are the main constituents of hops essentiol oil and contribute to the singular sensory properties of beer. However, terpenes are sensitive to oxidation leading to quality loss during beer aging. Herein, the reactivity of terpenes towards 1-hydroxyethyl radical has been determined employing a competitive kinetic approach using the spin-trap α-(4-pyr
J. Braz. Chem. Soc.. Publicado em: 2015-11
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16. Influence of antimicrobial solutions in the decontamination and adhesion of glass-fiber posts to root canals
AbstractObjective This study evaluated the effect of root canal disinfectants on the elimination of bacteria from the root canals, as well as their effect on glass-fiber posts bond strength.Material and Methods Fifty-three endodontically treated root canals had post spaces of 11 mm in length prepared and contaminated with E. faecalis. For CFU/ml analysis, ei
J. Appl. Oral Sci.. Publicado em: 2015-08
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17. Influência da limpeza mecânica com e sem o uso do microscópio operatório na resistência adesiva intrarradicular / Influence of mechanical cleaning with and without the use of the operating microscope in intraradicular adhesive strength
In endodontic treatment, there is an imperative need to restore the tooth, reestablishing its functions, since there is always a risk of recontamination of the root canal system and fractures. These risks are higher when there is loss of dental structure, requiring intraradicular posts to hold the restoration procedures in place. For the definitive and immed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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18. Síntese e estudo da atividade eletrocatalítica de óxidos de metais de transição e de nanopartículas de prata e ouro para a reação de redução de oxigênio / Synthesis and study of the electrocatalytic activity of transition metal oxides, and silver and gold nanoparticles for the oxygen reduction reaction
The oxygen reduction reaction (ORR) was studied on electrocatalysts composed by pure and mixed transition metal oxides of Mn, Co, and Ni, including spinel-like structures, and by Ag, Au, and Ag3M/C (M= Au, Pt, Pd e Cu) bimetallic nanoparticles, in alkaline electrolyte. The transition metal oxides were synthesized by thermal decomposition of their nitrates, a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2011
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19. A influência do corte com diferentes discos e velocidades na integridade dos espécimes e na resistência adesiva de uma cerâmica a um cimento resinoso dual em ensaio de microtração / The influence of different cutting speeds and brand of diamond saws on integrity of microtensile specimes and Bond strenght values
The aim of this research was to verify the influence of different cutting speeds and brand of diamond saws during microtensile specimen preparation on the bonding strength values and on the samples microscopy integrity (SEM). Twenty lithium disilicate glass-ceramic blocks (IPS e.max Press) were bonded with dual-cure resin cement (Rely X ARCTM) to composite (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/11/2010
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20. Effectiveness of sealing active proximal caries lesions with an adhesive system: 1-year clinical evaluation
The objective of this study was to evaluate the effectiveness of a therapeutic sealant to arrest non-cavitated proximal carious lesion progression. The study population comprised 44 adolescents who had bitewing radiographs taken for caries diagnosis. Non-cavitated lesions extending up to half of dentin thickness were included in the sample. In the experiment
Brazilian Oral Research. Publicado em: 2010-09
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21. Chelated minerals for poultry
Organic minerals have been subject of an increasing number of investigations recently. These compounds can be considered the most significant event regarding commercial forms of minerals targeting animal supplementation in the last decades. Minerals, especially metals, are usually supplemented in poultry feeds using cheap saline sources and have never requir
Publicado em: 2010
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22. Análise mecânica de retentores intra-radiculares / Mechanical analysis of endodontic post
The fiber-reinforcement composite (FRC) posts introduced the new concept of restorative system, in which the various components of the reconstruction: post, cement, filling material and dentin have now become a complex mechanically homogeneous. The knowledge of the structure, composition and physical properties of these fiber posts systems is important in or
Publicado em: 2010
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23. Domiciliary medical visit: space for interaction, communication and practice: case study in health family program, municipal district of Florianopolis Santa Catarina / Visita médica domiciliar: espaço para interação, comunicação e prática: estudo de caso no Programa Saúde da Família, município de Florianópolis - Santa Catarina
This study discusses the domiciliary medical visit, with base in research accomplished in the municipal district of Florianópolis, Santa Catarina, in the context of the Family Health Program. The main objective was to understand medical visit as a space for interaction and as a powerful instrument of communication between the professional, the patient and h
Publicado em: 2010
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24. Comportamento de líquidos no espaço-sloshing e amortecedores de nutação viscosos / Fluid behavior in the space-sloshing and viscous nutation dampers
A dinâmica de atitude de um veículo espacial em órbita da Terra refere-se ao movimento deste veículo em torno do seu centro de massa. O conhecimento do movimento de atitude é fundamental para o cumprimento dos objetivos da missão espacial. O uso adequado de sensores e atuadores, computadores de bordo, GPS, radares e estações terrestres são tecnologi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2009