Carbamide Peroxide Peroxide Hydrogen
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Decomposition Rate, pH, and Enamel Color Alteration of At-Home and In-Office Bleaching Agents
Resumo Este estudo avaliou a taxa de decomposição (DR), pH, alteração da cor do esmalte (∆E) e índice de clareamento (DWI) promovido por agentes clareadores caseiros e de consultório. A superfície do esmalte foi submetida a (n=10): agentes caseiros (10%, 15%, 20% de peróxido de carbamida - CP e 6% de peróxido de hidrogênio - HP) e três agentes a
Braz. Dent. J.. Publicado em: 22/07/2019
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2. Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial
Abstract Objective To assess pulp oxygen saturation levels (SaO2) in maxillary central incisors after dental bleaching. Materials and Methods 80 participants (160 teeth) were randomly allocated to four groups: G1 In-office bleaching with two applications of 35% hydrogen peroxide (HP) (20 minutes), followed by at-home bleaching with 10% carbamide peroxide
J. Appl. Oral Sci.. Publicado em: 11/04/2019
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3. High-concentration carbamide peroxide can reduce the sensitivity caused by in-office tooth bleaching: a single-blinded randomized controlled trial
Abstract Objectives A single-blinded, randomized, parallel clinical trial evaluated the use of 37% carbamide peroxide (CP) on bleaching effectiveness and tooth sensitivity reported by patients undergoing in-office tooth bleaching, in comparison with the results of using 35% hydrogen peroxide. Material and Methods Forty patients were allocated to receive
J. Appl. Oral Sci.. Publicado em: 07/05/2018
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4. Inflammatory response of human dental pulp to at-home and in-office tooth bleaching
ABSTRACT Tooth bleaching is a technique of choice to obtain a harmonious smile, but bleaching agents may damage the dental pulp. Objective: This study evaluated the inflammatory responses of human dental pulp after the use of two bleaching techniques. Material and Methods: Pulp samples were collected from human third molars extracted for orthodontic reason
J. Appl. Oral Sci.. Publicado em: 2016-10
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5. Can a bleaching toothpaste containing Blue Covarine demonstrate the same bleaching as conventional techniques? An in vitro, randomized and blinded study
ABSTRACT Objective The purpose of this in vitro study was to compare the efficacy of a bleaching toothpaste containing Blue Covarine vs. conventional tooth bleaching techniques using peroxides (both in-office and at-home). Material and Methods Samples were randomly distributed into five experimental groups (n=15): C - Control; BC – Bleaching toothpaste
J. Appl. Oral Sci.. Publicado em: 2015-12
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6. Effect of sodium ascorbate on the bond strength of silorane and methacrylate composites after vital bleaching
We investigated the effect of sodium ascorbate (SA) on the microtensile bond strengths (MTBSs) of different composites to bovine enamel after vital bleaching with hydrogen peroxide (HP) or carbamide peroxide (CP). Thirty bovine incisors were randomly divided into five groups and treated with no bleaching applicati
Braz. oral res.. Publicado em: 2013-07
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7. High-efficiency tooth bleaching using non-thermal atmospheric pressure plasma with low concentration of hydrogen peroxide
Light-activated tooth bleaching with a high hydrogen peroxide (HP; H2O2) concentration has risks and the actual role of the light source is doubtful. The use of conventional light might result in an increase in the temperature and cause thermal damage to the health of the tooth tissue. Objective This study investigated the efficacy of tooth bleaching using
J. Appl. Oral Sci.. Publicado em: 2013-06
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8. 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
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9. 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
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10. Effects of different concentrations of carbamide peroxide and bleaching periods on the roughness of dental ceramics
The wide use of dental bleaching treatment has brought concern about the possible effects of hydrogen peroxide on dental tissue and restorative materials. The objective of this study was to evaluate in vitro the effect of nightguard bleaching on the surface roughness of dental ceramics after different periods of bleaching treatment. Fifteen specimens of 5 ×
Brazilian Oral Research. Publicado em: 2011-10
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11. Avaliação clínica de um gel de nitrato de potássio e flúor na diminuição da sensibilidade no clareamento caseiro / Assessing the preventive effect of a desensitizing agent in sensitivity related to at-home bleaching.
O objetivo deste estudo clínico duplo-cego randomizado foi avaliar o efeito de um agente dessensibilizante (nitrato de potássio 5% e fluoreto de sódio 2% [Desensibilize KF 2%, FGM]) antes do clareamento dental na técnica caseira na prevenção/diminuição da sensibilidade dental. Foram selecionados 60 pacientes livres de lesões de cárie, com mais de 1
Publicado em: 2010
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12. 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