In vitro evaluation of extraradicular diffusion of 6% hydrogen peroxide during intracoronal bleaching
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
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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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 |
_version_ |
1754820874344595456 |