Results: 219

Role of enamel and dentin on color changes after internal bleaching associated or not with external bleaching

J. appl. oral sci; 29 (), 2021
Abstract Objective To evaluate the effect of the association between external and internal tooth bleaching on color changes in dentin and enamel, individually or recombined, previously stained with triple antibiotic paste (TAP). Methodology Forty enamel-dentin specimens from bovine incisors were sepa...

An in vitro evaluation of surface roughness, color stability and bacterial accumulation of lithium disilicate ceramic after prophylactic periodontal treatment

Braz. dent. sci; 24 (3), 2021
Objective: To evaluate the effect of scaling procedures using different ultrasonic tips on the surface roughness, color stability and bacterial accumulation of lithium disilicate ceramic. Material and Methods: Scaling procedure was carried out using ultrasonic scaler ...

Influência do material cerâmico, cimento e tipo de substrato na qualidade estética de restaurações indiretas

O objetivo deste estudo foi avaliar a influência do material cerâmico, cimento e tipo de substrato na qualidade estética de restaurações indiretas. A pesquisa científica foi dividida em duas partes. Na primeira análise, a alteração de cor e luminosidade de restaurações cerâmicas à base de di...

Effect of combining photoinitiators on cure efficiency of dental resin-based composites

J. appl. oral sci; 29 (), 2021
Abstract Camphorquinone is the most conventionally used photoinitiator in Dentistry. Although different alternative photoinitiators have been proposed, no photoinitiator was capable of completely substituting camphorquinone. The combination of photoinitiators has been considered the best alternative. Ob...

Evaluation of Internal bleaching with 35% hydrogen peroxide in dentin conditioned with 37% phosphoric acid and 17% EDTA

J. oral res. (Impresa); 9 (6), 2020
Introduction: This study aimed to evaluate the effect of dentin surface treatment with 37% phosphoric acid or 17% ethylenedia-minetetraacetic acid (EDTA) before Internal Bleaching with 35% hydrogen peroxide using the walking bleach technique. Material and Methods: This experimental in vitro study used...

Sobre a enunciação de mulheres não brancas na ciência: uma análise da produção intelectual de Gloria Anzaldúa e bell hooks

O presente trabalho busca investigar a fala/silêncio de mulheres de cor na produção científica e estabelecer uma discussão em torno do lócus enunciativo do sujeito subalterno na vida social contemporânea no campo científico. Foram analisados os textos "Intelectuais Negras", de bell hooks, e "Fala...

Regresión de la luminosidad del color posblanqueamiento dental casero en pacientes fumadores y no fumadores
Color luminosity regression after home tooth whitening in smoking and nonsmoking patients

Introducción: Existen muchos estudios de efectividad del blanqueamiento dental; sin embargo, son muy pocos los que hablan de regresión de color (fenómeno que se produce posterior a un blanqueamiento dental), lo mismo ocurre en relación a pacientes fumadores. Objetivo Determinar la regresión de la ...

A green approach for the treatment of dye and surfactant contaminated industrial wastewater

Braz. j. biol; 80 (3), 2020
Abstract Synthetic dyes, particularly reactive and acid dyes, are commonly used in the textile industry because of their advantages as excellent color fastness and brightness. Also, surfactants are used for an increment of coloring success in the textile industry. One of the major problems concerning tex...

Resistencia flexural y estabilidad de color en resinas híbridas y cerómeros empleadas en restauraciones indirectas
Flexural strength and color stability in hybrid resins and ceromers used in indirect restorations

Rev. Eugenio Espejo; 14 (1), 2020
Las restauraciones dentales con técnica indirecta fueron concebidas con el propósito de optimizar las propiedades mecánicas, físicas y químicas de los materiales polimerizados. En tal sentido, se realizó una investigación cuyo objetivo fue comparar restauraciones mediante la técnica indirecta uti...