Shear Bond Strength
Mostrando 25-36 de 169 artigos, teses e dissertações.
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25. Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode
Abstract Reinforced concrete (RC) beam-column connections especially those without transverse reinforcement in joint region can exhibit brittle behavior when intensive damage is concentrated in the joint region during an earthquake event. Brittle behavior in the joint region can compromise the ductile design philosophy and the expected overall performance of
Lat. Am. j. solids struct.. Publicado em: 2017-08
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26. Effect of surface treatment of prefabricated teeth on shear bond strength of orthodontic brackets
RESUMO Objetivo: o objetivo desse estudo in vitro foi avaliar e comparar os efeitos de desgastes, perfurações, jateamento e envelhecimento de dentes pré-fabricados (Dpf) na resistência ao cisalhamento (RC) de braquetes ortodônticos, bem como os efeitos dos tratamentos de superfície no índice de adesivo remanescente (ARI). Métodos: 192 Dpf foram d
Dental Press J. Orthod.. Publicado em: 2017-08
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27. Effect of CPP-ACP paste with and without CO2 laser irradiation on demineralized enamel microhardness and bracket shear bond strength
RESUMO Introdução: muitos pacientes, ao buscar o tratamento ortodôntico, já apresentam lesões incipientes no esmalte e precisam ser submetidos a tratamentos preventivos. O objetivo do presente estudo in vitro foi avaliar o efeito da pasta CPP-ACP e da irradiação com laser de CO2 na microdureza do esmalte desmineralizado e na resistência ao cisalham
Dental Press J. Orthod.. Publicado em: 2017-08
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28. Effect of nanotechnology in self-etch bonding systems on the shear bond strength of stainless steel orthodontic brackets
RESUMO Objetivo: avaliar o efeito das nanopartículas de dióxido de silício (SiO2), presentes em diferentes sistemas adesivos, na resistência ao cisalhamento da colagem (RAC) e no modo de fratura de braquetes ortodônticos avaliados em dois momentos. Métodos: noventa e seis pré-molares intactos foram divididos em quatro grupos: A) condicionador ácid
Dental Press J. Orthod.. Publicado em: 2017-02
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29. In vitro analysis of shear bond strength and adhesive remnant index of different metal brackets
RESUMO Introdução: atualmente, há uma grande diversidade de braquetes ortodônticos no mercado brasileiro, e a avaliação desses é fundamental para que os profissionais conheçam suas propriedades e possam qualificar a sua escolha. Objetivo: avaliar o desempenho de diferentes braquetes metálicos - com diferentes características de base -, por meio
Dental Press J. Orthod.. Publicado em: 2016-12
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30. Effect of silver nanoparticles on the physicochemical and antimicrobial properties of an orthodontic adhesive
ABSTRACT Orthodontic treatment with fixed brackets plays a major role on the formation of white spot lesions. Objective This study aimed to incorporate silver nanoparticle solutions (AgNP) in an orthodontic adhesive and evaluate its physicochemical and antimicrobial properties. Material and Methods Silver nanoparticle solutions were added to a commercial
J. Appl. Oral Sci.. Publicado em: 2016-08
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31. Effects of air abrasion with alumina or glass beads on surface characteristics of CAD/CAM composite materials and the bond strength of resin cements
ABSTRACT Objective The study aimed to evaluate effects of air abrasion with alumina or glass beads on bond strengths of resin cements to CAD/CAM composite materials. Material and Methods CAD/CAM composite block materials [Cerasmart (CS) and Block HC (BHC)] were pretreated as follows: (a) no treatment (None), (b) application of a ceramic primer (CP), (c)
J. Appl. Oral Sci.. Publicado em: 2015-12
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32. Influence of Light Source, Thermocycling and Silane on the Shear Bond Strength of Metallic Brackets to Ceramic
Resumo O objetivo neste estudo foi avaliar o efeito de diferentes fontes de luz, termociclagem e silano na resistência de união de bráquetes metálicos a cerâmica feldspática. Cilindros de cerâmica feldspática foram condicionados com ácido fluorídrico a 10% por 60 s. Metade dos cilindros (Grupos 1 a 4) recebeu duas camadas de silano. Bráquetes met�
Braz. Dent. J.. Publicado em: 2015-12
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33. Mechanical, antibacterial and bond strength properties of nano-titanium-enriched glass ionomer cement
The use of nanoparticles (NPs) has become a significant area of research in Dentistry. Objective The aim of this study was to investigate the physical, antibacterial activity and bond strength properties of conventional base, core build and restorative of glass ionomer cement (GIC) compared to GIC supplemented with titanium dioxide (TiO2) nanopowder at 3% an
J. Appl. Oral Sci.. Publicado em: 2015-06
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34. Shear bond strength of ceramic brackets after different pre-treatments in porcelain surface
AIM: To evaluate the bond strength of brackets bonded after different surface treatments on two dental ceramics. METHODS: One hundred and twenty discs 5 mm thick and 7 mm diameter of two ceramic types were made and randomly divided in 8 groups. Groups 1, 3, 5, and 7 used Eris ceramic and groups 2, 4, 6, and 8 used d.Sign ceramic. The ceramic surfaces were t
Braz. J. Oral Sci.. Publicado em: 2015-03
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35. Effect of different enamel conditionings on the bond strength of glass ionomer cement and ceramic brackets
Aim: To evaluate the effect of different enamel conditionings on the shear bond strength (SBS) and bond failure patterns of a resin modified glass ionomer cement (RMGIC) used to bond ceramic brackets. Methods: 105 human premolars extracted for orthodontic reasons were divided into 7 groups according to the enamel surface treatments: conditioners (35% phospho
Braz. J. Oral Sci.. Publicado em: 2014-12
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36. Evaluation of pH, ultimate tensile strength, and micro-shear bond strength of two self-adhesive resin cements
The aim of this study was to evaluate the pH, ultimate tensile strength (UTS), and micro-shear bond strength (µSBS) of two self-adhesive resin cements to enamel and dentin. Sound bovine incisors (n = 10) and two self-adhesive resin cements (i.e., RelyX U-100 and seT PP) were used. The pH of the resin cements was measured using a pH-indicator paper (n = 3).
Braz. oral res.. Publicado em: 14/10/2014