Photoinitiator
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Photochemical Synthesis of Ag and Au Nanoparticles Using a Thioxanthone Substituted Chitosan as Simultaneous Photoinitiator and Stabilizer
Silver (AgNPs) and gold (AuNPs) nanoparticles in aqueous solution were generated and stabilized using the 10-oxo-10H-dibenzene thiopyran-3-4-dicarboximide chitosan (TXICh) macrophotoinitiator. The photoinitiator and the nanoparticles in aqueous solution were characterized by UV-Vis spectroscopy and transmission electron microscopy (TEM). Pure TXICh in aqueou
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. Antibacterial, chemical and physical properties of sealants with polyhexamethylene guanidine hydrochloride
Abstract The aim of this study was to evaluate the influence of polyhexamethylene guanidine hydrochloride (PHMGH) in the physico-chemical properties and antibacterial activity of an experimental resin sealant. An experimental resin sealant was formulated with 60 wt.% of bisphenol A glycol dimethacrylate and 40 wt.% of triethylene glycol dimethacrylate with a
Braz. oral res.. Publicado em: 18/03/2019
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3. Development and characterization of a novel bulk-fill elastomeric temporary restorative composite
Abstract Objectives: This study investigated the physical and mechanical properties, antibacterial effect and biocompatibility of novel elastomeric temporary resin-based filling materials (TFMs) containing zinc methacrylate (ZM). Material and Methods: Experimental TFMs were prepared by mixing the zinc methacrylate with monomer, co-monomer, photoinitiator a
J. Appl. Oral Sci.. Publicado em: 10/12/2018
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4. Light curing resin cements containing iodonium salts promote suitable apical bonding of posts to radicular dentin
Abstract The aim of this study was to analyze the efficiency of experimental light-curing resin cements (ERCs) with a ternary photo-initiator system containing diphenyliodonium hexafluorphosphate (DPI) and different amines on retention of glass-fiber posts to dentin (GFP). ERCs formulations: a 1:1 mass ratio of 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phen
Braz. oral res.. Publicado em: 14/11/2018
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5. Influence of a hydrophobic monomer on the physical and mechanical properties of experimental surface sealants
Abstract This study evaluated the effect of adding the hydrophobic monomer 1,12 dodecanediol dimethacrylate (DDDMA) to experimental sealants with and without thermocycling on degree of conversion (DC), water sorption (WS), water solubility (WSB), color stability (ΔE), and micro-shear bond strength (μSBS). Five experimental and one commercially available se
Braz. oral res.. Publicado em: 11/10/2018
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6. Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
Resumo O objetivo deste estudo foi avaliar in vitro o efeito do fotoiniciador fenilpropanodiona (PPD), isoladamente ou em associação com a CQ, sobre a estabilidade de cor de cimentos resinosos fotoativados e sua resistência de união adesiva à cerâmica, por teste de microcisalhamento. Foram utilizados 4 cimentos resinosos, sendo um comercial (RelyX Vene
Braz. Dent. J.. Publicado em: 2018-02
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7. Influence of Different Concentration and Ratio of a Photoinitiator System on the Properties of Experimental Resin Composites
Resumo O objetivo foi avaliar a influência da concentração e proporção de canforoquinona (CQ)/amina terciária (DABE) na resistência à flexão (RF), módulo flexural (MF), grau de conversão (GC), amarelamento (AM), sorpção (SA) e solubilidade em água (SL) de compósitos experimentais. Blendas acrilatas foram preparadas com diferentes concentraçõ
Braz. Dent. J.. Publicado em: 2017-12
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8. Influence of Photoinitiator System on Physical-Chemical Properties of Experimental Self-Adhesive Composites
Resumo O objetivo do estudo foi determinar a influência do sistema fotoiniciador sobre as propriedades físico-químicas de compósitos fluidos. Os compósitos convencionais foram compostos por bisfenol-glicidil dimetacrilato (BisGMA) + trietilenoglicol dimetacrilato (TEGDMA), e os autoadesivos, apresentavam BisGMA +TEGDMA+ Bis2(metacriloiloxi)etil fosfato
Braz. Dent. J.. Publicado em: 2017-02
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9. Evaluation of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental dental resin-based materials
ABSTRACT Objective To evaluate the influence of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental resin-based materials photoactivated using different light curing units (LCUs). Material and Methods Experimental resin-based materials with the same organic matrix (60:40 wt% BisGMA:TEGDMA) were mechanically blended using a
J. Appl. Oral Sci.. Publicado em: 2016-12
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10. Optimizing light-cured composite through variations in camphorquinone and butylhydroxytoluene concentrations
Abstract The use of a free-radical polymerization inhibitor, butylhydroxytoluene (BHT), and a common photo-initiator, camphorquinone (CQ), to reduce polymerization stress in dental composite was investigated in this study. Samples were prepared by mixing Bis-GMA, UDMA, and TEGDMA at a 1:1:1 ratio (wt%), and silanized borosilicate glass fillers at 70 wt% were
Braz. oral res.. Publicado em: 20/05/2016
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11. Influence of Photoinitiator and Light-Curing Source on Bond Strength of Experimental Resin Cements to Dentin
Resumo Este estudo avaliou a resistência de união (BS) de cimentos resinosos experimentais formulados com diferentes fotoiniciadores, quando ativados através de cerâmica, por dois tipos de fontes luminosas (LCUs). Foram preparadas sete formulações com diferentes concentrações em peso (wt) de canforquinona (CQ) e/ou fenilpropanodiona (PPD): C5: 0,5%CQ
Braz. Dent. J.. Publicado em: 2016-02
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12. Avaliação do grau de conversão monomérica, parâmetros de cinética de polimerização e determinação de monômeros residuais em resinas experimentais / Evaluation of degree of monomer conversion, the polymerization kinetic parameters and determination of residual monomers in experimental resins
Este estudo teve como objetivo investigar múltiplos aspectos relacionados a polimerização da resina composta como: o grau de conversão monomérica (GC), parâmetros da cinética de polimerização e a determinação de monômeros residuais TEGDMA e BisGMA, além de avaliar o desempenho de aparelhos fotoativadores. As resinas compostas experimentais foram
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012