Composite Resins
Mostrando 25-36 de 232 artigos, teses e dissertações.
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25. Effects of modeling liquid/resin and polishing on the color change of resin composite
Abstract Modeling liquids/resins have been used to build up resin composite (RC) restorations, although there is a lack of information regarding their effects on the color stability of the latter. Therefore, the purpose of the present study was to evaluate the effects of the presence of modeling liquid between layers of RC and the finishing/polishing state o
Braz. oral res.. Publicado em: 18/08/2016
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26. Cytotoxicity and cytokine expression induced by silorane and methacrylate-based composite resins
ABSTRACT The successful use of composite resins in Dentistry depends on physicochemical properties, but also on the biological compatibility of resins, because of the close association between pulp and dentin. Objective The aim of this study was to evaluate cytotoxicity and cytokine production induced by light-cured or non-light-cured methacrylate-based an
J. Appl. Oral Sci.. Publicado em: 2016-08
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27. Repair Strength in Simulated Restorations of Methacrylate- or Silorane-Based Composite Resins
Resumo O objetivo neste estudo foi verificar a resistência de união em restaurações simuladas de compósitos baseados em metacrilato ou silorano reparadas com compósito à base de metacrilato. Compósitos baseados em metacrilato (Filtek P60; 3M ESPE) ou silorano (Filtek P90; 3M ESPE) foram associados com adesivo (Adper Single Bond 2; 3M ESPE). Vinte e q
Braz. Dent. J.. Publicado em: 2016-08
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28. Fifty years of Brazilian Dental Materials Group: scientific contributions of dental materials field evaluated by systematic review
ABSTRACT Objective A systematic review was conducted to analyze Brazilian scientific and technological production related to the dental materials field over the past 50 years. Material and Methods This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (Prisma) statement. Searches were performed until December 2014 in s
J. Appl. Oral Sci.. Publicado em: 2016-06
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29. Tensile properties and color and mass variations of GFPR composites under alkaline and ultraviolet exposures
The objective of the present study was to evaluate the influence of two different environmental conditions on the quantitative change of color and mass, tensile strength and modulus of elasticity of glass fiber reinforced polymers (GFRP) produced in Brazil. For this purpose, specimens were taken from pultruded composite profiles with two different matrices (
Matéria (Rio J.). Publicado em: 2016-03
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30. Surface Roughness of Composite Resins Subjected to Hydrochloric Acid
Este estudo avaliou a influencia do ácido clorídrico na rugosidade superficial de resinas compostas submetidas a escovação. Sessenta corpos de prova medindo 2 mm de espessura x 6 mm de diâmetro foram confeccionados e utilizados como unidades experimentais. O presente estudo envolve uma análise fatorial 3x2, onde os fatores foram resina composta (n=20),
Braz. Dent. J.. Publicado em: 2015-06
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31. Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber
Vinyl ester resins are widely used in sandwich composite structures. Because of their good resistance to chemicals, flexibility and easy processing, these sandwich are extensively applied in the marine sector. These composites are typically manufactured by liquid molding processes, especially infusion. In this study, RTM light was used to inject the polymeri
Matéria (Rio J.). Publicado em: 2015-03
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32. Long-term bond strength, degree of conversion and resistance to degradation of a HEMA-free model adhesive
Aim: To evaluate the long-term bond strength, degree of conversion and resistance to degradation in ethanol of HEMA-containing and HEMA-free model adhesive resins of a three-step etch-and-rinse adhesive system. Methods: The superficial dentin of 16 bovine incisor teeth was exposed, and the teeth were divided in two groups according to the HEMA concentration
Braz. J. Oral Sci.. Publicado em: 2014-12
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33. Radiant exposure effects on physical properties of methacrylate - and silorane-composites
AIM: To evaluate the effect of different radiant exposures on the degree of conversion (DC), Knoop hardness number (KHN), plasticization (P), water sorption (WS), and solubility (S) of different monomer resin-based composites. METHODS: Circular specimens (5 x 2 mm) were manufactured from methacrylate and silorane composite resins, and light-cured at 19
Braz. J. Oral Sci.. Publicado em: 2014-09
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34. Does the light source affect the repairability of composite resins?
The aim of this study was to examine the effect of the light source on the microshear bond strength of different composite resins repaired with the same substrate. Thirty cylindrical specimens of each composite resin—Filtek Silorane, Filtek Z550 (3M ESPE), Gradia Direct Anterior (GC), and Aelite Posterior (BISCO)—were prepared and light-cured with a QTH
Braz. oral res.. Publicado em: 04/08/2014
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35. Effect of finishing and polishing on surface roughness of composite resins after bleaching
AIM : To evaluate the influence of finishing and polishing techniques on the surface roughness of two composite resins (CRs) subjected to bleaching procedure. METHODS : Forty-eight CR specimens were divided into six groups (n=8). For G1 to G3, a microhybrid CR (Opallis; FGM) was used, and G4 to G6, received a nanohybrid CR (Brilliant NewLine; Coltène/Wh
Braz. J. Oral Sci.. Publicado em: 2014-04
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36. Indicators of the risk mechanics for Class-I and Class-II amalgam and composite resin restorations
AIM: To determine indicators of prognosis for mechanical risks of amalgam and composite resin restorations in permanent teeth. METHODS: Thirty-nine adult patients with direct clinical, photographic, radiographic and model examinations. A total of 256 restorations were classified as "not satisfactory," with Bravo or Charlie values according to the modif
Braz. J. Oral Sci.. Publicado em: 2014-04