Results: 17

Alterações morfológicas e químicas do esmalte humano após o clareamento dental: avaliação in situ

Introdução: A alteração de cor dos dentes apresenta-se como um dos fatores que mais concorrem para o desequilíbrio do sorriso, sendo o clareamento dental amplamente difundido e solicitado pelos pacientes. Objetivo: Este estudo in situ teve como objetivo avaliar as mudanças morfológicas e químicas...

Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel

J. appl. oral sci; 24 (1), 2016
ABSTRACT Development of new materials for tooth bleaching justifies the need for studies to evaluate the changes in the enamel surface caused by different bleaching protocols. Objective The aim of this study was to evaluate the bovine dental enamel wear in function of different bleaching gel protocols,...

Influência do tempo de aplicação do bicarbonato de sódio a 10% na adesão ao esmalte bovino clareado: estudo in vitro

Este estudo in vitro avaliou a influência do tempo de aplicação do bicarbonato de sódio a 10% na qualidade da união de um sistema adesivo universal unido ao esmalte bovino clareado por meio de testes de resistência de união (microtração imediata e após 6 meses) e grau de conversão na interface...

Does a toothpaste containing blue covarine have any effect on bleached teeth? An in vitro, randomized and blinded study

Braz. oral res. (Online); 30 (1), 2016
Abstract The objective of this study was to analyze the effect of bleaching toothpastes, both conventional and those containing the new whitening agent Blue Covarine, on teeth previously bleached by conventional techniques (in-office and at-home). Squared bovine enamel/dentin blocks (6.0 x 6.0 x 2.0 mm) ...

Effects of alpha-tocopherol on fracture resistance after endodontic treatment, bleaching and restoration

Braz. oral res. (Online); 30 (1), 2016
Abstract This study evaluated the effects of 10% alphatocopherol on the fracture resistance of endodontically treated teeth subjected to tooth bleaching with hydrogen peroxide and immediately restored with composite resin. Fifty bovine incisors were selected, including 10 sound teeth that constituted the...

Método de recuperación para piezas anatómicas del sistema nervioso central

Int. j. morphol; 32 (2), 2014
El material anatómico del sistema nervioso central es cada vez más difícil de obtener. A pesar de estar fijado, es muy lábil y al ser expuesto a diversas condiciones ambientales durante las actividades docentes, se va deteriorando, resecándose, adquiriendo una consistencia rígida y un aspecto oscur...

Chloroperoxidase mediated oxidation of chlorinated phenols using electrogenerated hydrogen peroxide

Electron. j. biotechnol; 10 (1), 2007
Chloroperoxidase (CPO) from Caldariomyces fumago catalyses the oxidation of several chlorinated phenols (CP) commonly found in industrial waste waters in the presence of hydrogen peroxide. This study compares the direct addition of hydrogen peroxide (DA) with its continuous electrogeneration (EG) during ...