Acrylic Resin
Mostrando 25-36 de 239 artigos, teses e dissertações.
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25. Antimicrobial action of sodium hypochlorite and castor oil solutions for denture cleaning –
in vitro evaluationThe objective of this
in vitro study was to evaluate the antimicrobial action of sodium hypochlorite (0.25% and 0.50%) and 10% castor oil solutions against specific microorganisms, by counting Colony Forming Units (CFU) of clinically important bacteria andCandida species. Acrylic resin specimens (n = 320; Lucitone 550) wBraz. oral res.. Publicado em: 21/08/2015
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26. Surface properties of multilayered, acrylic resin artificial teeth after immersion in staining beverages
AbstractObjective To evaluate the effect of staining beverages (coffee, orange juice, and red wine) on the Vickers hardness and surface roughness of the base (BL) and enamel (EL) layers of improved artificial teeth (Vivodent and Trilux).Material and Methods Specimens (n=8) were stored in distilled water at 37°C for 24 h and then submitted to the tests. Afte
J. Appl. Oral Sci.. Publicado em: 2015-08
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27. Effects of Denture Cleansers on Heat-Polymerized Acrylic Resin: A Five-Year-Simulated Period of Use
Este estudo avaliou as alterações de cor, rugosidade de superfície e resistência à flexão de resinas acrílicas após imersão em soluções de peróxido alcalino e hipoclorito alcalino, simulando um período de cinco anos de uso. Sessenta corpos de prova circulares (16 mm x 4 mm) e 60 retangulares (65 mm x 10 mm x 3,3 mm) de resina acrílica termic
Braz. Dent. J.. Publicado em: 2015-08
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28. Bonding stability of adhesive systems to eroded dentin
This in vitro study evaluated the immediate and 6 months microshear bond strength (µSBS) of different adhesive systems to sound and eroded dentin. Sixty bovine incisors were embedded in acrylic resin and ground to obtain flat buccal dentin surfaces. Specimens were randomly allocated into two groups: sound dentin (immersion in artificial saliva) and eroded d
Braz. oral res.. Publicado em: 07/07/2015
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29. Influence of polymeric matrix on the physical and chemical properties of experimental composites
Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries. The aim of the present study was to evaluate the influence of the organic matrix on polymerization stress (PS), degree of conversion (DC), elastic modulu
Braz. oral res.. Publicado em: 2015
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30. Development of a novel resin with antimicrobial properties for dental application
The adhesion of biofilm on dental prostheses is a prerequisite for the occurrence of oral diseases. Objective: To assess the antimicrobial activity and the mechanical properties of an acrylic resin embedded with nanostructured silver vanadate (β-AgVO3). Material and Methods: The minimum inhibitory concentration (MIC) of β-AgVO3 was studied in relation t
J. Appl. Oral Sci.. Publicado em: 2014-10
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31. Influence of mouthwashes on the physical properties of orthodontic acrylic resin
AIM: The aim of this study was to evaluate the influence of acrylic resin immersion in different mouthwashes on hardness, roughness and color. METHODS: Specimens of an orthodontic self-cured acrylic resin (Orto Clas(r)) were produced and immersed in five mouthwashes: Plax(r) Classic (Colgate(r)); Plax(r) alcohol-free (Colgate(r)); Listerine(r) (Johnson
Braz. J. Oral Sci.. Publicado em: 2014-09
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32. Evaluation of shear bond strength of two resin-based composites and glass ionomer cement to pure tricalcium silicate-based cement (Biodentine®)
Objectives: Tricalcium silicate is the major constituent phase in mineral trioxide aggregate (MTA). It is thus postulated that pure tricalcium silicate can replace the Portland cement component of MTA. The aim of this study was to evaluate bond strength of methacrylate-based (MB) composites, silorane-based (SB) composites, and glass ionomer cement (GIC) to
J. Appl. Oral Sci.. Publicado em: 2014-07
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33. Effect of cleanser solutions on the color of acrylic resins associated with titanium and nickel-chromium alloys
This study evaluated the effect of cleanser solutions on the color of heat-polymerized acrylic resin (HPAR) and on the brightness of dental alloys with 180 immersion trials. Disk-shaped specimens were made with I) commercially pure titanium, II) nickel-chromium-molybdenum-titanium, III) nickel-chromium molybdenum, and IV) nickel-chromium-molybdenum beryllium
Braz. oral res.. Publicado em: 11/06/2014
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34. Effect of veneering material on the deformation suffered by implant-supported fixed prosthesis framework
Knowing how stresses are dissipated on the fixed implant-supported complex allows adequate treatment planning and better choice of the materials used for prosthesis fabrication. Objectives: The aim of this study was to evaluate the deformation suffered by cantilevered implant-supported fixed prostheses frameworks cast in silver-palladium alloy and coated wi
J. Appl. Oral Sci.. Publicado em: 2014-06
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35. Dimensional stability of a novel polyvinyl siloxane impression technique
AIM: To introduce a modification of the reline impression technique (MRIT), and compare the dimensional changes of impressions obtained by MRIT and by conventional reline impression technique (CRIT). METHODS: An acrylic resin tablet was milled by a CAD-CAM system to simulate three abutments (A, B and C) with different distances among them. The abutment
Braz. J. Oral Sci.. Publicado em: 2014-04
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36. Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
Objective: The purpose of this study was to evaluate the Knoop hardness number (KHN) of dual-cured core build-up resin composites (DCBRCs) at 6 depths of cavity after 3 post-irradiation times by 4 light-exposure methods. Material and Methods: Five specimens each of DCBRCs (Clearfil DC Core Plus [DCP] and Unifil Core EM [UCE]) were filled in acrylic resi
J. Appl. Oral Sci.. Publicado em: 2014-01