Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology

Detalhes bibliográficos
Autor(a) principal: Pinto,Cristiane Franco
Data de Publicação: 2004
Outros Autores: Oliveira,Rogério de, Cavalli,Vanessa, Giannini,Marcelo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242004000400006
Resumo: The aim of this study was to evaluate the surface roughness, microhardness and morphology of human enamel exposed to six bleaching agents (at baseline and post-treatment). Human dental enamel samples were obtained from human third molars and randomly divided into seven groups (n = 11): control, Whiteness Perfect - 10% carbamide peroxide (10% CP), Colgate Platinum - 10% CP, Day White 2Z - 7.5% hydrogen peroxide (7.5% HP), Whiteness Super - 37% CP, Opalescence Quick - 35% CP and Whiteness HP - 35% HP. Bleaching agents were applied according to manufacturers' instructions. The control group remained not treated and stored in artificial saliva. Microhardness testing was performed with a Knoop indentor and surface roughness was analyzed with a profilometer. Morphologic observations were carried out with scanning electron microscopy (SEM). Results were statistically analyzed by two-way analysis of variance and Tukey's test (5%), and revealed a significant decrease in microhardness values and a significant increase in surface roughness post-bleaching. Changes in enamel morphology after bleaching were observed under SEM. It was concluded that bleaching agents can alter the microhardness, roughness and morphology of dental enamel surface.
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spelling Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphologyTooth bleachingPeroxidesDental enamelThe aim of this study was to evaluate the surface roughness, microhardness and morphology of human enamel exposed to six bleaching agents (at baseline and post-treatment). Human dental enamel samples were obtained from human third molars and randomly divided into seven groups (n = 11): control, Whiteness Perfect - 10% carbamide peroxide (10% CP), Colgate Platinum - 10% CP, Day White 2Z - 7.5% hydrogen peroxide (7.5% HP), Whiteness Super - 37% CP, Opalescence Quick - 35% CP and Whiteness HP - 35% HP. Bleaching agents were applied according to manufacturers' instructions. The control group remained not treated and stored in artificial saliva. Microhardness testing was performed with a Knoop indentor and surface roughness was analyzed with a profilometer. Morphologic observations were carried out with scanning electron microscopy (SEM). Results were statistically analyzed by two-way analysis of variance and Tukey's test (5%), and revealed a significant decrease in microhardness values and a significant increase in surface roughness post-bleaching. Changes in enamel morphology after bleaching were observed under SEM. It was concluded that bleaching agents can alter the microhardness, roughness and morphology of dental enamel surface.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2004-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242004000400006Brazilian Oral Research v.18 n.4 2004reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242004000400006info:eu-repo/semantics/openAccessPinto,Cristiane FrancoOliveira,Rogério deCavalli,VanessaGiannini,Marceloeng2005-04-08T00:00:00Zoai:scielo:S1806-83242004000400006Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2005-04-08T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
title Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
spellingShingle Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
Pinto,Cristiane Franco
Tooth bleaching
Peroxides
Dental enamel
title_short Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
title_full Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
title_fullStr Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
title_full_unstemmed Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
title_sort Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology
author Pinto,Cristiane Franco
author_facet Pinto,Cristiane Franco
Oliveira,Rogério de
Cavalli,Vanessa
Giannini,Marcelo
author_role author
author2 Oliveira,Rogério de
Cavalli,Vanessa
Giannini,Marcelo
author2_role author
author
author
dc.contributor.author.fl_str_mv Pinto,Cristiane Franco
Oliveira,Rogério de
Cavalli,Vanessa
Giannini,Marcelo
dc.subject.por.fl_str_mv Tooth bleaching
Peroxides
Dental enamel
topic Tooth bleaching
Peroxides
Dental enamel
description The aim of this study was to evaluate the surface roughness, microhardness and morphology of human enamel exposed to six bleaching agents (at baseline and post-treatment). Human dental enamel samples were obtained from human third molars and randomly divided into seven groups (n = 11): control, Whiteness Perfect - 10% carbamide peroxide (10% CP), Colgate Platinum - 10% CP, Day White 2Z - 7.5% hydrogen peroxide (7.5% HP), Whiteness Super - 37% CP, Opalescence Quick - 35% CP and Whiteness HP - 35% HP. Bleaching agents were applied according to manufacturers' instructions. The control group remained not treated and stored in artificial saliva. Microhardness testing was performed with a Knoop indentor and surface roughness was analyzed with a profilometer. Morphologic observations were carried out with scanning electron microscopy (SEM). Results were statistically analyzed by two-way analysis of variance and Tukey's test (5%), and revealed a significant decrease in microhardness values and a significant increase in surface roughness post-bleaching. Changes in enamel morphology after bleaching were observed under SEM. It was concluded that bleaching agents can alter the microhardness, roughness and morphology of dental enamel surface.
publishDate 2004
dc.date.none.fl_str_mv 2004-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242004000400006
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-83242004000400006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.source.none.fl_str_mv Brazilian Oral Research v.18 n.4 2004
reponame:Brazilian Oral Research
instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron:SBPQO
instname_str Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
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reponame_str Brazilian Oral Research
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repository.name.fl_str_mv Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
repository.mail.fl_str_mv pob@edu.usp.br||bor@sbpqo.org.br
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