Dental Whitening
Mostrando 13-24 de 41 artigos, teses e dissertações.
-
13. Avaliação espectrofotométrica da clareação caseira e de consultório sob o braquete ortodôntico em esmalte e dentina / Spectrophotometric evaluation of home and office bleaching treatment under orthodontic bracket in enamel and dentin
The objective of this study was to evaluate, through espetrofotometria reflectance, the effectiveness of dental bleaching under the orthodontic bracket, in black tea dyed enamel and dentin, using carbamide peroxide 15% and hydrogen peroxide and 38%. The sample consisted of 32 bovine incisors sectioned into blocks of 8 mm x 8 mm , with 1 mm of enamel and 1.5
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
-
14. Comparative clinical study of the effectiveness of different dental bleaching methods - two year follow-up
This study evaluated color change, stability, and tooth sensitivity in patients submitted to different bleaching techniques. MATERIAL AND METHODS: In this study, 48 patients were divided into five groups. A half-mouth design was conducted to compare two in-office bleaching techniques (with and without light activation): G1: 35% hydrogen peroxide (HP) (Lase P
J. Appl. Oral Sci.. Publicado em: 2012-08
-
15. Effect of whitening toothpaste on titanium and titanium alloy surfaces
Dental implants have increased the use of titanium and titanium alloys in prosthetic applications. Whitening toothpastes with peroxides are available for patients with high aesthetic requirements, but the effect of whitening toothpastes on titanium surfaces is not yet known, although titanium is prone to fluoride ion attack. Thus, the aim of the present stud
Braz. oral res.. Publicado em: 19/07/2012
-
16. Avaliação in vitro do efeito do hidrogel de ascorbato de sódio e ácido ascórbico na resistência adesiva da resina composta ao esmalte dental bovino clareado com peróxido de hidrogênio 35% / In vitro evaluation of the effect of sodium ascorbate and ascorbic acid hydrogel in microshear bond strength of composite resin to bovine enamel bleached with 35% hydrogen peroxide
It is referred that the use of antioxidants may improve the decreased bond strength after bleaching treatment. The aim of this in vitro study was to evaluate the effect of 10% and 20% sodium ascorbate hydrogel and 10% ascorbic acid hydrogel applied for 15 minutes immediately after 35% hydrogen peroxide bleaching (HP) (Lase Peroxide Sensy-DMC). 45 bovine inci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
-
17. Avaliação clínica da efetividade do clareamento em consultório de dentes polpados, com e sem o condicionamento ácido prévio do esmalte / Clinical evaluation of the effectiveness of in-office whitening tooth pulp, with and without prior acid etching of enamel
The aim of this study was to compare the in vivo effectiveness of in-office bleaching technique with hybrid light source (LED and laser therapy), with and without prior acid etching of enamel, depending on the degree of change and stability of color and sensitivity . Upon being informed of the aims of the study was thirty-four volunteers were selected accord
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/06/2011
-
18. Estudo in vitro da variação do pH de agentes clareadores e seu efeito sobre o desgaste e rugosidade superficial do esmalte bovino após escovação simulada / Variation of pH bleaching gels, wear and roughness of bovine enamel after tooth brushing abrasion test.
This in vitro study evaluated the variation of the pH of bleaching gels, roughness and the wear on bovine enamel, after various in office bleaching protocols and brushing. Ninety fragments of enamel, measuring 15mm x 5mm, were randomly divided into nine groups (n=10) according to bleaching procedure: G1: control; G2: 35% hydrogen peroxide (HP) (Whiteness HP,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/05/2011
-
19. Physical-chemical characteristics of whitening toothpaste and evaluation of its effects on enamel roughness
This in vitro study evaluated the physical-chemical characteristics of whitening toothpastes and their effect on bovine enamel after application of a bleaching agent (16% carbamide peroxide). Physical-chemical analysis was made considering mass loss by desiccation, ash content and pH of the toothpastes. Thirty bovine dental enamel fragments were prepared for
Brazilian Oral Research. Publicado em: 08/07/2011
-
20. Effects of mouthwashes on Knoop hardness and surface roughness of dental composites after different immersion times
The aim of this in vitro study was to evaluate the effect of different mouthwashes on superficial roughness and Knoop hardness of two resin composites. Eighty specimens (6 mm Ø and 2 mm height) were prepared and divided into eight experimental groups (n = 10) according to the resin composites (4 Seasons and Esthet X), and storage solutions (G1 - Distilled w
Brazilian Oral Research. Publicado em: 2011-04
-
21. Evaluation of the effectiveness of whitening, morphlogy and perneability of enamel surface under different techniques for application of a hydrogen peroxide 35% after application of fluoride / Avaliação da eficácia de clareamento, permeabilidade e morfologia superficial do esmalte submetido a diferentes técnicas de aplicação do peróxido de hidrogênio a 35%, após aplicação de flúor
Alterações visuais, histoquímicas e micromorfológicas podem ser observadas em superfícies dentais submetidas ao clareamento, desencadeando sensibilidade, menor resistência ao desgaste, maior manchamento e aderência bacteriana. Uma forma de verificar a ocorrência de danos superficiais e sub-superficiais é através da permeabilidade e da avaliação s
Publicado em: 2010
-
22. Evaluation of changes in surface roughness and chemical composition of the composite and bovine enamel submitted different surface treatments / Avaliação das alterações de rugosidade superficial e composição química do compósito e esmalte dental bovino submetido a diferentes tratamentos superficiais
Objectives: To evaluate qualitatively and quantitatively changes in the surface and chemical composition of bovine enamel and composite, using hydrogen peroxide 38% when submitted to different surface treatments. Method: It was used 120 fragments from the tooth surface of bovine incisors, and in one half was prepared and a standard cavity restored with compo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2009
-
23. 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
-
24. EFEITOS DE AGENTES CLAREADORES EXTERNOS NOS TECIDOS DENTÁRIOS E NA JUNÇÃO AMELOCEMENTÁRIA / Effects of external bleaching agents on dental tissues and the cementoenamel junction
Evaluate with a scanning electron microscope the alterations occurring in enamel, cementum and cementoenamel junction after the use of different external bleaching agents. Fifteen healthy pre-molars were sectioned in the middle with the aid of a cutting machine (Labcut 1010), in the longitudinal direction along the axis of the teeth, obtaining mesial and dis
Publicado em: 2009