Degree Of Conversion
Mostrando 25-36 de 284 artigos, teses e dissertações.
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25. 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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26. Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives
Abstract The non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative atmospheres, using Flynn-Wall-Ozawa’s approach to assess the kinetic parameters of the decomposition process
Polímeros. Publicado em: 21/09/2018
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27. Effect of disinfection techniques on physical-mechanical properties of a microwave-activated acrylic resin
Abstract The effects of disinfection by microwave irradiation and immersion in peracetic acid on the physical-mechanical properties of a microwave-activated acrylic resin were evaluated. Specimens of acrylic resin were divided into a control group (specimens not disinfected) and 2 test groups subjected to one disinfection method: microwave irradiation at 85
Polímeros. Publicado em: 06/07/2018
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28. Minimization of polymerization shrinkage effects on composite resins by the control of irradiance during the photoactivation process
Abstract High levels of shrinkage stress caused by volumetric variations during the activation process are one of the main problems in the practical application of composite resins. Objective The aim of this study is to reduce the shrinkage stress and minimize the effects caused by composite resin volumetric variation due to the photopolymerization. In thi
J. Appl. Oral Sci.. Publicado em: 18/06/2018
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29. Effect of different bonding protocols on degree of monomer conversion and bond strength between orthodontic brackets and enamel
Abstract The objective of the present study was to evaluate the effect of different surface treatments and polymerization protocols on the bond strength of brackets to enamel, and the degree of conversion of the bonding agents. 120 bovine crowns were embedded in acrylic resin blocks and sanded. Next, the blocks were randomly assigned into 12 groups. Metal br
Braz. oral res.. Publicado em: 11/06/2018
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30. Model resin composites incorporating ZnO-NP: activity against S. mutans and physicochemical properties characterization
Abstract Although resin composites are widely used in the clinical practice, the development of recurrent caries at composite-tooth interface still remains as one of the principal shortcomings to be overcome in this field. Objectives To evaluate the activity against S. mutans biofilm of model resin composites incorporating different concentrations of ZnO-na
J. Appl. Oral Sci.. Publicado em: 07/05/2018
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31. Inferences on the effects of selection for feed conversion over meat quality traits in broiler
ABSTRACT: The intense selection process for economic traits conducted by the poultry breeding programs has been caused several changes in broiler meat quality. A database belonging to a selection program of a broiler male line was used to estimate heritability and genetic correlations for feed conversion ratio and meat quality traits, which were: initial and
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-04
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32. A comparative study of bulk-fill composites: degree of conversion, post-gel shrinkage and cytotoxicity
Abstract: Bulk-fill composites are claimed to be restorative materials used in deep preparations and effectively photoactivated in layers up to 4 mm. The aim of the present study was to evaluate the degree of conversion, post-gel volumetric shrinkage, and cytotoxicity of six bulk-fill and two conventional composites. Degree of conversion was determined by FT
Braz. oral res.. Publicado em: 08/03/2018
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33. Evaluation of long-term bond strength and selected properties of self-adhesive resin cements
Abstract This study evaluated the shear bond strength (SBS) of self-adhesive resin cements (SARCs) to dentin and their physical-chemical properties. Five commercial SARCs were evaluated [SmartCem®2 – DENTSPLY (SC2); BisCem® – Bisco (BC); SeT PP® − SDI (SeT); Relyx U100® – 3M ESPE (U100) and YCEM® SA - Yller (YCEM)]. The SARCs were evaluated for
Braz. oral res.. Publicado em: 01/03/2018
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34. Effect on adhesion of a nanocapsules-loaded adhesive system
Abstract This study aimed to evaluate the in situ degree of conversion, contact angle, and immediate and long-term bond strengths of a commercial primer and an experimental adhesive containing indomethacin- and triclosan-loaded nanocapsules (NCs). The indomethacin- and triclosan-loaded NCs, which promote anti-inflammatory and antibacterial effects through co
Braz. oral res.. Publicado em: 01/02/2018
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35. Influence of curing protocol and ceramic composition on the degree of conversion of resin cement
Abstract Due to increasing of aesthetic demand, ceramic crowns are widely used in different situations. However, to obtain long-term prognosis of restorations, a good conversion of resin cement is necessary. Objective: To evaluate the degree of conversion (DC) of one light-cure and two dual-cure resin cements under a simulated clinical cementation of cerami
J. Appl. Oral Sci.. Publicado em: 2017-12
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36. Weathering of Rhyolites and Soil Formation in an Atlantic Forest Fragment in Northeastern Brazil
ABSTRACT Weathering and pedogenesis have been studied for a wide range of rocks and climates around the world. However, the eruption of rhyolitic magmas is a rare geological event, which leads to few studies associated with the rhyolite-soil-landscape relationship. In this context, this study evaluated the influence of rhyolite weathering on the properties o
Rev. Bras. Ciênc. Solo. Publicado em: 02/10/2017