In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching

Detalhes bibliográficos
Autor(a) principal: Brito Júnior, Manoel
Data de Publicação: 2008
Outros Autores: Faria e Silva, André Luis, Camilo, Carla Cristina, Abreu, Mauro Henrique Nogueira Guimarães, Soares, Janir Alves
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista odonto ciência (Online)
Texto Completo: https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754
Resumo: Purpose: To evaluate the extraradicular diffusion of creamy 6 % hydrogen peroxide (HP) associated or not with sodium perborate (SP) at the cervical region of endodontically treated teeth during intracoronal bleaching. Methods: Thirty-two endodontically treated maxillary canines and central incisors were used. The gutta-percha was removed 3 mm below the cement/enamel junction, and the external root surface was covered with cyanoacrylate except for the cervical region. The teeth were randomly allocated to 4 groups: G1: 6 % HP+SP (n=11); G2: 6 % HP (n=11); G3: distilled water (negative control, n=5) and G4: 30 % HP (positive control, n=5). The specimens were immersed in a solution of potassium chromate (yellow), which turns blue in presence of HP. Two calibrated examiners (Kendall coefficient = 0.936) attributed scores according to the solution color (0 - unaltered color, 1 - light blue, and 2 - dark blue). Data were analyzed by Kruskal-Wallis and Mann-Whitney tests (α=0.05). Results: Eighteen percent of the 6 % HP specimens with or without SP showed color alteration. Only G4 had score values statistically higher than the other groups (P=0.004). Conclusion: It can be concluded that 6 % HP cream did not have significant extraradicular diffusion during intracoronal bleaching but it was not 100 % safe. Key words: Intracoronal bleaching; hydrogen peroxide
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spelling In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleachingAvaliação in vitro da difusão extra-radicular do peróxido de hidrogênio a 6% durante clareamento coronário internoIntracoronal bleachinghydrogen peroxideDental bleachingPurpose: To evaluate the extraradicular diffusion of creamy 6 % hydrogen peroxide (HP) associated or not with sodium perborate (SP) at the cervical region of endodontically treated teeth during intracoronal bleaching. Methods: Thirty-two endodontically treated maxillary canines and central incisors were used. The gutta-percha was removed 3 mm below the cement/enamel junction, and the external root surface was covered with cyanoacrylate except for the cervical region. The teeth were randomly allocated to 4 groups: G1: 6 % HP+SP (n=11); G2: 6 % HP (n=11); G3: distilled water (negative control, n=5) and G4: 30 % HP (positive control, n=5). The specimens were immersed in a solution of potassium chromate (yellow), which turns blue in presence of HP. Two calibrated examiners (Kendall coefficient = 0.936) attributed scores according to the solution color (0 - unaltered color, 1 - light blue, and 2 - dark blue). Data were analyzed by Kruskal-Wallis and Mann-Whitney tests (α=0.05). Results: Eighteen percent of the 6 % HP specimens with or without SP showed color alteration. Only G4 had score values statistically higher than the other groups (P=0.004). Conclusion: It can be concluded that 6 % HP cream did not have significant extraradicular diffusion during intracoronal bleaching but it was not 100 % safe. Key words: Intracoronal bleaching; hydrogen peroxideObjetivo: Avaliar a difusão do peróxido de hidrogênio (PH) 6 % em creme, associado ou não ao perborato de sódio (PS) na região cervical de dentes endodonticamente tratados durante clareamento coronário interno. Metodologia: Foram utilizados 32 caninos e incisivos superiores tratados endodonticamente. Removeu-se 3mm de guta-percha abaixo da junção cemento/esmalte e a superfície radicular externa foi impermeabilizada com cianoacrilato, exceto a região cervical. Os dentes foram divididos aleatoriamente em: G1: PH 6 %+PS (n=11); G2: PH 6 % (n=11); G3: água destilada (controle negativo, n=5) e G4: PH 30 % (controle positivo, n=5). Os espécimes foram imersos em solução de cromato de potássio (cor amarela), que se torna azul na presença do PH. Dois avaliadores calibrados (coeficiente de Kendall = 0,936) atribuíram escores de acordo com a cor da solução evidenciadora (0 - cor inalterada; 1 - azul claro e 2 - azul escuro). Os dados foram analisados pelos testes de Kruskal-Wallis e Mann-Whitney (α=0,05). Resultados: Em 18% dos casos houve difusão extra-radicular do PH 6%, estando este associado ou não ao perborato de sódio. Apenas o G4 apresentou valores estatisticamente maiores que os demais (P=0,004). Conclusão: Pode-se concluir que o PH 6 % em creme não apresentou difusão extra-radicular significativa durante o clareamento coronário interno, mas não foi 100 % seguro. Palavras-chave: Clareamento interno; peróxido de hidrogênioEDIPUCRS - Editora Universitária da PUCRS2008-11-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articlelaboratoryapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754Revista Odonto Ciência; Vol. 24 No. 1 (2009); 36 - 39Revista Odonto Ciência; v. 24 n. 1 (2009); 36 - 391980-65230102-9460reponame:Revista odonto ciência (Online)instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSenghttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754/3666Brito Júnior, ManoelFaria e Silva, André LuisCamilo, Carla CristinaAbreu, Mauro Henrique Nogueira GuimarãesSoares, Janir Alvesinfo:eu-repo/semantics/openAccess2013-11-11T13:23:39Zoai:ojs.revistaseletronicas.pucrs.br:article/3754Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2013-11-11T13:23:39Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.none.fl_str_mv In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
Avaliação in vitro da difusão extra-radicular do peróxido de hidrogênio a 6% durante clareamento coronário interno
title In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
spellingShingle In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
Brito Júnior, Manoel
Intracoronal bleaching
hydrogen peroxide
Dental bleaching
title_short In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
title_full In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
title_fullStr In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
title_full_unstemmed In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
title_sort In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
author Brito Júnior, Manoel
author_facet Brito Júnior, Manoel
Faria e Silva, André Luis
Camilo, Carla Cristina
Abreu, Mauro Henrique Nogueira Guimarães
Soares, Janir Alves
author_role author
author2 Faria e Silva, André Luis
Camilo, Carla Cristina
Abreu, Mauro Henrique Nogueira Guimarães
Soares, Janir Alves
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Brito Júnior, Manoel
Faria e Silva, André Luis
Camilo, Carla Cristina
Abreu, Mauro Henrique Nogueira Guimarães
Soares, Janir Alves
dc.subject.por.fl_str_mv Intracoronal bleaching
hydrogen peroxide
Dental bleaching
topic Intracoronal bleaching
hydrogen peroxide
Dental bleaching
description Purpose: To evaluate the extraradicular diffusion of creamy 6 % hydrogen peroxide (HP) associated or not with sodium perborate (SP) at the cervical region of endodontically treated teeth during intracoronal bleaching. Methods: Thirty-two endodontically treated maxillary canines and central incisors were used. The gutta-percha was removed 3 mm below the cement/enamel junction, and the external root surface was covered with cyanoacrylate except for the cervical region. The teeth were randomly allocated to 4 groups: G1: 6 % HP+SP (n=11); G2: 6 % HP (n=11); G3: distilled water (negative control, n=5) and G4: 30 % HP (positive control, n=5). The specimens were immersed in a solution of potassium chromate (yellow), which turns blue in presence of HP. Two calibrated examiners (Kendall coefficient = 0.936) attributed scores according to the solution color (0 - unaltered color, 1 - light blue, and 2 - dark blue). Data were analyzed by Kruskal-Wallis and Mann-Whitney tests (α=0.05). Results: Eighteen percent of the 6 % HP specimens with or without SP showed color alteration. Only G4 had score values statistically higher than the other groups (P=0.004). Conclusion: It can be concluded that 6 % HP cream did not have significant extraradicular diffusion during intracoronal bleaching but it was not 100 % safe. Key words: Intracoronal bleaching; hydrogen peroxide
publishDate 2008
dc.date.none.fl_str_mv 2008-11-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
laboratory
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3754/3666
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 EDIPUCRS - Editora Universitária da PUCRS
publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
dc.source.none.fl_str_mv Revista Odonto Ciência; Vol. 24 No. 1 (2009); 36 - 39
Revista Odonto Ciência; v. 24 n. 1 (2009); 36 - 39
1980-6523
0102-9460
reponame:Revista odonto ciência (Online)
instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron:PUC_RS
instname_str Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron_str PUC_RS
institution PUC_RS
reponame_str Revista odonto ciência (Online)
collection Revista odonto ciência (Online)
repository.name.fl_str_mv Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
repository.mail.fl_str_mv ||odontociencia@pucrs.br
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