Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1155/2013/193241 http://hdl.handle.net/11449/112977 |
Resumo: | This study evaluated the effect of physical and chemical activation on the diffusion time of different concentrations of hydrogen peroxide (HP) bleaching agents through enamel and dentin. One hundred and twenty bovine cylindrical specimens were divided into six groups (n = 20): 20% HP; 20% HP with light activation; 20% HP with manganese gluconate; 35% HP; 35% HP with light activation; and 35% HP with manganese gluconate. The specimens were fixed over transparent epoxy wells with internal cavities to simulate a pulpal chamber. This chamber was filled with an enzymatic reagent to simulate pulpal fluid. The bleaching gels were applied on enamel surface and the image of the pulpal fluid was captured by a video camera to monitor the time of peroxide penetration in each specimen. ANOVA analysis showed that concentration and type of activation of bleaching gel significantly influenced the diffusion time of HP (P < 0.05). 35% HP showed the lowest diffusion times compared to the groups with 20% HP gel. The light activation of HP decreased significantly the diffusion time compared to chemical activation. The highest diffusion time was obtained with 20% HP chemically activated. The diffusion time of HP was dependent on activation and concentration of HP. The higher concentration of HP diffused through dental tissues more quickly. |
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spelling |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In VitroThis study evaluated the effect of physical and chemical activation on the diffusion time of different concentrations of hydrogen peroxide (HP) bleaching agents through enamel and dentin. One hundred and twenty bovine cylindrical specimens were divided into six groups (n = 20): 20% HP; 20% HP with light activation; 20% HP with manganese gluconate; 35% HP; 35% HP with light activation; and 35% HP with manganese gluconate. The specimens were fixed over transparent epoxy wells with internal cavities to simulate a pulpal chamber. This chamber was filled with an enzymatic reagent to simulate pulpal fluid. The bleaching gels were applied on enamel surface and the image of the pulpal fluid was captured by a video camera to monitor the time of peroxide penetration in each specimen. ANOVA analysis showed that concentration and type of activation of bleaching gel significantly influenced the diffusion time of HP (P < 0.05). 35% HP showed the lowest diffusion times compared to the groups with 20% HP gel. The light activation of HP decreased significantly the diffusion time compared to chemical activation. The highest diffusion time was obtained with 20% HP chemically activated. The diffusion time of HP was dependent on activation and concentration of HP. The higher concentration of HP diffused through dental tissues more quickly.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista, UNESP, Inst Sci & Technol, Dept Restorat Dent, BR-12245000 Sao Jose Dos Campos, SP, BrazilUniv Estadual Paulista, UNESP, Inst Sci & Technol, Dept Restorat Dent, BR-12245000 Sao Jose Dos Campos, SP, BrazilFAPESP: 12/10917-6FAPESP: 10/18711-2Hindawi Publishing CorporationUniversidade Estadual Paulista (Unesp)Torres, Carlos R. G. [UNESP]Souza, Cristiane S. [UNESP]Borges, Alessandra B. [UNESP]Huhtala, Maria Filomena R. L. [UNESP]Caneppele, Taciana M. F. [UNESP]2014-12-03T13:11:12Z2014-12-03T13:11:12Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article5application/pdfhttp://dx.doi.org/10.1155/2013/193241Scientific World Journal. New York: Hindawi Publishing Corporation, 5 p., 2013.1537-744Xhttp://hdl.handle.net/11449/11297710.1155/2013/193241WOS:000324941800001WOS000324941800001.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScientific World Journalinfo:eu-repo/semantics/openAccess2023-10-29T06:10:48Zoai:repositorio.unesp.br:11449/112977Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-29T06:10:48Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
title |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
spellingShingle |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro Torres, Carlos R. G. [UNESP] |
title_short |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
title_full |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
title_fullStr |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
title_full_unstemmed |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
title_sort |
Influence of Concentration and Activation on Hydrogen Peroxide Diffusion through Dental Tissues In Vitro |
author |
Torres, Carlos R. G. [UNESP] |
author_facet |
Torres, Carlos R. G. [UNESP] Souza, Cristiane S. [UNESP] Borges, Alessandra B. [UNESP] Huhtala, Maria Filomena R. L. [UNESP] Caneppele, Taciana M. F. [UNESP] |
author_role |
author |
author2 |
Souza, Cristiane S. [UNESP] Borges, Alessandra B. [UNESP] Huhtala, Maria Filomena R. L. [UNESP] Caneppele, Taciana M. F. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Torres, Carlos R. G. [UNESP] Souza, Cristiane S. [UNESP] Borges, Alessandra B. [UNESP] Huhtala, Maria Filomena R. L. [UNESP] Caneppele, Taciana M. F. [UNESP] |
description |
This study evaluated the effect of physical and chemical activation on the diffusion time of different concentrations of hydrogen peroxide (HP) bleaching agents through enamel and dentin. One hundred and twenty bovine cylindrical specimens were divided into six groups (n = 20): 20% HP; 20% HP with light activation; 20% HP with manganese gluconate; 35% HP; 35% HP with light activation; and 35% HP with manganese gluconate. The specimens were fixed over transparent epoxy wells with internal cavities to simulate a pulpal chamber. This chamber was filled with an enzymatic reagent to simulate pulpal fluid. The bleaching gels were applied on enamel surface and the image of the pulpal fluid was captured by a video camera to monitor the time of peroxide penetration in each specimen. ANOVA analysis showed that concentration and type of activation of bleaching gel significantly influenced the diffusion time of HP (P < 0.05). 35% HP showed the lowest diffusion times compared to the groups with 20% HP gel. The light activation of HP decreased significantly the diffusion time compared to chemical activation. The highest diffusion time was obtained with 20% HP chemically activated. The diffusion time of HP was dependent on activation and concentration of HP. The higher concentration of HP diffused through dental tissues more quickly. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 2014-12-03T13:11:12Z 2014-12-03T13:11:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1155/2013/193241 Scientific World Journal. New York: Hindawi Publishing Corporation, 5 p., 2013. 1537-744X http://hdl.handle.net/11449/112977 10.1155/2013/193241 WOS:000324941800001 WOS000324941800001.pdf |
url |
http://dx.doi.org/10.1155/2013/193241 http://hdl.handle.net/11449/112977 |
identifier_str_mv |
Scientific World Journal. New York: Hindawi Publishing Corporation, 5 p., 2013. 1537-744X 10.1155/2013/193241 WOS:000324941800001 WOS000324941800001.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Scientific World Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
5 application/pdf |
dc.publisher.none.fl_str_mv |
Hindawi Publishing Corporation |
publisher.none.fl_str_mv |
Hindawi Publishing Corporation |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964748017565696 |