Surface morphology alterations in bovine dentin exposed to different bleaching agents

Detalhes bibliográficos
Autor(a) principal: Santos, Juliana Nascimento
Data de Publicação: 2015
Outros Autores: Oliveira, Daniel Pinto de, Dametto, Fábio Roberto, Gomes, Brenda Paula Figueiredo de Almeida, Zaia, Alexandre Augusto, Almeida, José Flávio Affonso de, Ferraz, Caio Cezar Randi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian journal of oral sciences (Online)
Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642361
Resumo: Aim: This study evaluated the morphological changes caused by internal bleaching agents on dentin surface. Methods: Twenty crowns of bovine incisors were cut into slabs that were randomly distributed in six experimental groups (n = 5), according to the bleaching agent used: G1 – sodium perborate + water, G2 – sodium perborate + 2% chlorhexidine gel, G3 – sodium perborate + 30% hydrogen peroxide, G4 – 30% hydrogen peroxide, G5 – 37% carbamide peroxide and G6 – gel base without carbamide. Two Control Groups were used: C1 with distilled water and C2 with 2% chlorhexidine gel. The specimens were immersed in the respective test bleaching agent and incubated at 37 °C for seven days. Following, they were prepared for scanning electron microscopy and five images from each tooth segment were recorded and analyzed for surface morphological alterations, by three previously calibrated examiners. Inter-examiner agreement was verified using the Kappa test. The rank averages obtained for the groups were subjected to Kruskal-Wallis analysis of variance at 5% significance level. Results: The analysis of the scores obtained indicated that all tested materials caused some morphological alteration on dentin, except for sodium perborate + water (G1) and Control Groups 1 and 2. Hydrogen peroxide and carbamide peroxide caused significantly more severe alterations (p < 0.05) to dentin structure, than the other bleaching agents evaluated. Conclusions: Sodium perborate-based pastes seemed to be the most harmless agent to dentin structures in non-vital tooth bleaching, while hydrogen peroxide solutions and carbamide peroxide agents caused the greatest alterations.
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spelling Surface morphology alterations in bovine dentin exposed to different bleaching agentsTooth bleachingDentinDental pulp cavityOdontologyAim: This study evaluated the morphological changes caused by internal bleaching agents on dentin surface. Methods: Twenty crowns of bovine incisors were cut into slabs that were randomly distributed in six experimental groups (n = 5), according to the bleaching agent used: G1 – sodium perborate + water, G2 – sodium perborate + 2% chlorhexidine gel, G3 – sodium perborate + 30% hydrogen peroxide, G4 – 30% hydrogen peroxide, G5 – 37% carbamide peroxide and G6 – gel base without carbamide. Two Control Groups were used: C1 with distilled water and C2 with 2% chlorhexidine gel. The specimens were immersed in the respective test bleaching agent and incubated at 37 °C for seven days. Following, they were prepared for scanning electron microscopy and five images from each tooth segment were recorded and analyzed for surface morphological alterations, by three previously calibrated examiners. Inter-examiner agreement was verified using the Kappa test. The rank averages obtained for the groups were subjected to Kruskal-Wallis analysis of variance at 5% significance level. Results: The analysis of the scores obtained indicated that all tested materials caused some morphological alteration on dentin, except for sodium perborate + water (G1) and Control Groups 1 and 2. Hydrogen peroxide and carbamide peroxide caused significantly more severe alterations (p < 0.05) to dentin structure, than the other bleaching agents evaluated. Conclusions: Sodium perborate-based pastes seemed to be the most harmless agent to dentin structures in non-vital tooth bleaching, while hydrogen peroxide solutions and carbamide peroxide agents caused the greatest alterations.Universidade Estadual de Campinas2015-12-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/864236110.20396/bjos.v8i1.8642361Brazilian Journal of Oral Sciences; v. 8 n. 1 (2009): Apr./Jun.; 25-29Brazilian Journal of Oral Sciences; Vol. 8 No. 1 (2009): Apr./Jun.; 25-291677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642361/9850Santos, Juliana NascimentoOliveira, Daniel Pinto deDametto, Fábio RobertoGomes, Brenda Paula Figueiredo de AlmeidaZaia, Alexandre AugustoAlmeida, José Flávio Affonso deFerraz, Caio Cezar Randiinfo:eu-repo/semantics/openAccess2016-02-25T09:24:35Zoai:ojs.periodicos.sbu.unicamp.br:article/8642361Revistahttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/PUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/oaibrjorals@fop.unicamp.br||brjorals@fop.unicamp.br1677-32251677-3217opendoar:2016-02-25T09:24:35Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false
dc.title.none.fl_str_mv Surface morphology alterations in bovine dentin exposed to different bleaching agents
title Surface morphology alterations in bovine dentin exposed to different bleaching agents
spellingShingle Surface morphology alterations in bovine dentin exposed to different bleaching agents
Santos, Juliana Nascimento
Tooth bleaching
Dentin
Dental pulp cavity
Odontology
title_short Surface morphology alterations in bovine dentin exposed to different bleaching agents
title_full Surface morphology alterations in bovine dentin exposed to different bleaching agents
title_fullStr Surface morphology alterations in bovine dentin exposed to different bleaching agents
title_full_unstemmed Surface morphology alterations in bovine dentin exposed to different bleaching agents
title_sort Surface morphology alterations in bovine dentin exposed to different bleaching agents
author Santos, Juliana Nascimento
author_facet Santos, Juliana Nascimento
Oliveira, Daniel Pinto de
Dametto, Fábio Roberto
Gomes, Brenda Paula Figueiredo de Almeida
Zaia, Alexandre Augusto
Almeida, José Flávio Affonso de
Ferraz, Caio Cezar Randi
author_role author
author2 Oliveira, Daniel Pinto de
Dametto, Fábio Roberto
Gomes, Brenda Paula Figueiredo de Almeida
Zaia, Alexandre Augusto
Almeida, José Flávio Affonso de
Ferraz, Caio Cezar Randi
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Santos, Juliana Nascimento
Oliveira, Daniel Pinto de
Dametto, Fábio Roberto
Gomes, Brenda Paula Figueiredo de Almeida
Zaia, Alexandre Augusto
Almeida, José Flávio Affonso de
Ferraz, Caio Cezar Randi
dc.subject.por.fl_str_mv Tooth bleaching
Dentin
Dental pulp cavity
Odontology
topic Tooth bleaching
Dentin
Dental pulp cavity
Odontology
description Aim: This study evaluated the morphological changes caused by internal bleaching agents on dentin surface. Methods: Twenty crowns of bovine incisors were cut into slabs that were randomly distributed in six experimental groups (n = 5), according to the bleaching agent used: G1 – sodium perborate + water, G2 – sodium perborate + 2% chlorhexidine gel, G3 – sodium perborate + 30% hydrogen peroxide, G4 – 30% hydrogen peroxide, G5 – 37% carbamide peroxide and G6 – gel base without carbamide. Two Control Groups were used: C1 with distilled water and C2 with 2% chlorhexidine gel. The specimens were immersed in the respective test bleaching agent and incubated at 37 °C for seven days. Following, they were prepared for scanning electron microscopy and five images from each tooth segment were recorded and analyzed for surface morphological alterations, by three previously calibrated examiners. Inter-examiner agreement was verified using the Kappa test. The rank averages obtained for the groups were subjected to Kruskal-Wallis analysis of variance at 5% significance level. Results: The analysis of the scores obtained indicated that all tested materials caused some morphological alteration on dentin, except for sodium perborate + water (G1) and Control Groups 1 and 2. Hydrogen peroxide and carbamide peroxide caused significantly more severe alterations (p < 0.05) to dentin structure, than the other bleaching agents evaluated. Conclusions: Sodium perborate-based pastes seemed to be the most harmless agent to dentin structures in non-vital tooth bleaching, while hydrogen peroxide solutions and carbamide peroxide agents caused the greatest alterations.
publishDate 2015
dc.date.none.fl_str_mv 2015-12-17
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642361
10.20396/bjos.v8i1.8642361
url https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642361
identifier_str_mv 10.20396/bjos.v8i1.8642361
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642361/9850
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual de Campinas
publisher.none.fl_str_mv Universidade Estadual de Campinas
dc.source.none.fl_str_mv Brazilian Journal of Oral Sciences; v. 8 n. 1 (2009): Apr./Jun.; 25-29
Brazilian Journal of Oral Sciences; Vol. 8 No. 1 (2009): Apr./Jun.; 25-29
1677-3225
reponame:Brazilian journal of oral sciences (Online)
instname:Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
instname_str Universidade Estadual de Campinas (UNICAMP)
instacron_str UNICAMP
institution UNICAMP
reponame_str Brazilian journal of oral sciences (Online)
collection Brazilian journal of oral sciences (Online)
repository.name.fl_str_mv Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)
repository.mail.fl_str_mv brjorals@fop.unicamp.br||brjorals@fop.unicamp.br
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