Bleaching Agents
Mostrando 25-36 de 67 artigos, teses e dissertações.
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25. Ion release from a composite resin after exposure to different 10% carbamide peroxide bleaching agents
OBJECTIVE: This in vitro study evaluated the influence of two 10% carbamide peroxide bleaching agents - a commercial product (Opalescence PF; Ultradent Products, Inc.) and a bleaching agent prepared in a compounding pharmacy - on the chemical degradation of a light-activated composite resin by determining its release of ions before and after exposure to the
Journal of Applied Oral Science. Publicado em: 2012-06
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26. Changes in surface roughness and color stability of two composites caused by different bleaching agents
O objetivo deste estudo foi avaliar o efeito de dois agentes clareadores (peróxido de hidrogênio a 10% e 35%) sobre a estabilidade de cor e rugosidade superficial de dois compósitos, um nanohíbrido e um nanoparticulado. Os espécimes foram polidos, envelhecidos, manchados, clareados e polidos novamente. A ação dos agentes clareadores sobre os compósit
Braz. Dent. J.. Publicado em: 2012
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27. Effect of high-concentrated bleaching agents on the bond strength at dentin/resin interface and flexural strength of dentin
Este estudo avaliou o efeito de agentes clareadores na resistência de união da interface dentina/resina e resistência à flexão da dentina. Quarenta caninos superiores foram selecionados para o estudo. No teste de cisalhamento, 40 fragmentos de dentina intracoronária (5 x 5 mm) obtidos a partir de superfícies vestibulares das coroas foram incluídos em
Brazilian Dental Journal. Publicado em: 2012
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28. Effect of antioxidant agents on bond strength of composite to bleached enamel with 38% hydrogen peroxide
This study evaluated the effect of antioxidant agents on microtensile bond strengths (mTBS) of composite to bleached enamel. Fifteen freshly extracted human third molars were selected and randomly assigned to 6 groups (n = 5): (NB) enamel not bleached, (B) bleached enamel, (BR7) bleached enamel and restored 7 days later, (BSA) bleached enamel+sodium ascorbat
Materials Research. Publicado em: 20/05/2011
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29. Efeito de géis clareadores na desmineralização do esmalte e módulo de elasticidade da matriz orgânica da dentina bovina / Effect of bleaching agents on enamel demineralization and elastic modulus of bovine dentin organic matrix
O objetivo geral deste estudo foi avaliar o efeito de géis clareadores contendo cálcio ou fosfato de cálcio amorfo (ACP) no módulo de elasticidade da dentina bovina desmineralizada e desmineralização do esmalte hígido ou com lesão inicial de cárie artificial. Capítulo 1: Este estudo avaliou o efeito de agentes clareadores no módulo de elasticidade
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2010
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30. EFEITO DE AGENTES CLAREADORES À BASE DE PERÓXIDO DE HIDROGÊNIO SOBRE A FLUORESCÊNCIA DE RESINAS COMPOSTAS / EFFECT OF HYDROGEN PEROXIDE BLEACHING AGENTS ON FLUORESCENCE OF COMPOSITE RESINS
Devido à crescente busca por um sorriso estético, a procura por procedimentos menos invasivos, como a restauração em resina composta e o clareamento dental, também aumentou. As resinas compostas apresentam propriedades ópticas, sendo que uma destas propriedades é a fluorescência, que destina-se a dar naturalidade à restauração mimetizando-as à de
Publicado em: 2010
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31. Study for use the wastes of the paper manufacture in the road construction / Estudo para a utilização de resíduo da fabricação de papel na construção rodoviária
The paper and pulp industry represent one of the most expressive industrial sector around the world, being of great importance to the world economy. In South America, because of the wide forest resources, Brazil and Chile are the largest pulp-producing. Brazil produces around 6 million tons of pulp per year, among which 98% of the pulp are produced by the bl
Publicado em: 2010
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32. Micromorphology and microhardness of enamel after treatment with home-use bleaching agents containing 10% carbamide peroxide and 7.5% hydrogen peroxide
OBJECTIVE: The purpose of this study was to assess the effect of home-use bleaching agents containing 10% carbamide peroxide and 7.5% hydrogen peroxide on enamel microhardness and surface micromorphology. MATERIAL AND METHODS: Enamel slabs (n=10) received the bleaching agents for 1 h/day and remained in artificial saliva solution for 23 h/day, during a total
Journal of Applied Oral Science. Publicado em: 2009-12
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33. Effectiveness of home bleaching agents in discolored teeth and influence on enamel microhardness
OBJECTIVES: This study evaluated the effectiveness of different home bleaching agents on color alteration and their influence on surface and subsurface microhardness of discolored bovine enamel. MATERIAL AND METHODS: Forty-five fragments of bovine incisors were randomly allocated into 3 groups (n=15) according to the bleaching agent: 10% carbamide peroxide g
Journal of Applied Oral Science. Publicado em: 2009-08
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34. Over-the-counter whitening agents: a concise review
Tooth discoloration is commonly found in the dental clinic and tooth bleaching has been considered the preferred esthetic alternative, being more conservative, safe and with predictable results. Supervised home-use of 10% Carbamide Peroxide (CP) bleaching with custom-trays is the most common bleaching procedure dispensed by dentists to their patients. The go
Brazilian Oral Research. Publicado em: 2009-06
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35. Effectiveness of carbamide peroxide and sodium perborate in non-vital discolored teeth
OBJECTIVE: To evaluate the efficacy of 16% carbamide peroxide gel (CP16%), tetrahydrate sodium perborate (SP) and mixture (CP16% + SP), in walking bleaching of non-vital discolored teeth. MATERIALS AND METHODS: Sixty single-rooted human premolars with intact crowns were used and initial color was assessed using Vita shade guide and standardized photos. The t
Journal of Applied Oral Science. Publicado em: 2009-06
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36. Clinical evaluation of effectiveness for different techniques of extrinsic bleaching / Avaliação clínica de diferentes técnicas de clareamento de dentes polpados quanto à efetividade durante 12 meses
Objectives: This study was evaluated color change and stability and tooth sensitivity in patients submitted to different bleaching techniques. Methods: Forty five patients were selected according to inclusion/exclusion criteria and divided in five groups (n=15). A half-mouth design was conducted to compare two in-office bleaching techniques with the same pro
Publicado em: 2009