Effect of acid etching time on demineralization of primary and permanent coronal dentin
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/226980 |
Resumo: | Purpose: To determine the effect of acid etching time on dentin calcium solubilization and to compare the solubilization rate of primary and permanent dentin when etched for the same period of time. Methods: Flat coronal dentin surfaces were produced on primary (n=8) and permanent (n=8) sound teeth. Three 2 mm-diameter areas were delimited on each surface and assigned to 5, 10 or 15 seconds of acid etching. Five microliters of 35% H3PO4 were applied on each area during the preset times, and 4 uL were retrieved for analysis. The amount of calcium was determined colorimetrically using Arsenazo III reagent and expressed as ug Ca/mm2 of dentin. Data were subjected to two-way ANOVA, Tukey's test and linear regression (α=5%). Results: For both primary and permanent dentin, a statistically significant correlation was observed between acid etching time and calcium concentration (primary dentin R2= 0.79; permanent dentin R2= 0.73). Mean (sd) values of dissolved primary dentin after 5, 10 and 15 seconds were 1.00 (0.25), 1.74 (0.11) and 2.30 (0.42), whereas for permanent dentin the values were 0.47 (0.13), 0.89 (0.36) and 1.38 (0.20) ug Ca/mm2, respectively. Greater calcium solubilization (P< 0.05) was detected for primary dentin than for permanent dentin after all acid etching times. © 2012 P & G. |
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Effect of acid etching time on demineralization of primary and permanent coronal dentinPurpose: To determine the effect of acid etching time on dentin calcium solubilization and to compare the solubilization rate of primary and permanent dentin when etched for the same period of time. Methods: Flat coronal dentin surfaces were produced on primary (n=8) and permanent (n=8) sound teeth. Three 2 mm-diameter areas were delimited on each surface and assigned to 5, 10 or 15 seconds of acid etching. Five microliters of 35% H3PO4 were applied on each area during the preset times, and 4 uL were retrieved for analysis. The amount of calcium was determined colorimetrically using Arsenazo III reagent and expressed as ug Ca/mm2 of dentin. Data were subjected to two-way ANOVA, Tukey's test and linear regression (α=5%). Results: For both primary and permanent dentin, a statistically significant correlation was observed between acid etching time and calcium concentration (primary dentin R2= 0.79; permanent dentin R2= 0.73). Mean (sd) values of dissolved primary dentin after 5, 10 and 15 seconds were 1.00 (0.25), 1.74 (0.11) and 2.30 (0.42), whereas for permanent dentin the values were 0.47 (0.13), 0.89 (0.36) and 1.38 (0.20) ug Ca/mm2, respectively. Greater calcium solubilization (P< 0.05) was detected for primary dentin than for permanent dentin after all acid etching times. © 2012 P & G.Department of Orthodontics and Pediatric Dentistry Araraquara School of Dentistry UNESP - Paulista State University, Araraquara, Sao PauloDepartment of Physiological Sciences Piracicaba Dental School University of Campinas, Piracicaba, Sao PauloFaculty of Dentistry of Araraquara - UNESP, Rua Humaita, 1680, 14801-903 Araraquara, SPDepartment of Orthodontics and Pediatric Dentistry Araraquara School of Dentistry UNESP - Paulista State University, Araraquara, Sao PauloFaculty of Dentistry of Araraquara - UNESP, Rua Humaita, 1680, 14801-903 Araraquara, SPUniversidade Estadual Paulista (UNESP)Universidade Estadual de Campinas (UNICAMP)Scheffel, Débora Lopes Salles [UNESP]Tenuta, Lívia Maria AndalóCury, Jaime AparecidoHebling, Josimeri [UNESP]2022-04-29T04:59:19Z2022-04-29T04:59:19Z2012-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article235-238American Journal of Dentistry, v. 25, n. 4, p. 235-238, 2012.0894-8275http://hdl.handle.net/11449/2269802-s2.0-84867026817Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAmerican Journal of Dentistryinfo:eu-repo/semantics/openAccess2024-09-26T14:21:13Zoai:repositorio.unesp.br:11449/226980Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-26T14:21:13Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
title |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
spellingShingle |
Effect of acid etching time on demineralization of primary and permanent coronal dentin Scheffel, Débora Lopes Salles [UNESP] |
title_short |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
title_full |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
title_fullStr |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
title_full_unstemmed |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
title_sort |
Effect of acid etching time on demineralization of primary and permanent coronal dentin |
author |
Scheffel, Débora Lopes Salles [UNESP] |
author_facet |
Scheffel, Débora Lopes Salles [UNESP] Tenuta, Lívia Maria Andaló Cury, Jaime Aparecido Hebling, Josimeri [UNESP] |
author_role |
author |
author2 |
Tenuta, Lívia Maria Andaló Cury, Jaime Aparecido Hebling, Josimeri [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Scheffel, Débora Lopes Salles [UNESP] Tenuta, Lívia Maria Andaló Cury, Jaime Aparecido Hebling, Josimeri [UNESP] |
description |
Purpose: To determine the effect of acid etching time on dentin calcium solubilization and to compare the solubilization rate of primary and permanent dentin when etched for the same period of time. Methods: Flat coronal dentin surfaces were produced on primary (n=8) and permanent (n=8) sound teeth. Three 2 mm-diameter areas were delimited on each surface and assigned to 5, 10 or 15 seconds of acid etching. Five microliters of 35% H3PO4 were applied on each area during the preset times, and 4 uL were retrieved for analysis. The amount of calcium was determined colorimetrically using Arsenazo III reagent and expressed as ug Ca/mm2 of dentin. Data were subjected to two-way ANOVA, Tukey's test and linear regression (α=5%). Results: For both primary and permanent dentin, a statistically significant correlation was observed between acid etching time and calcium concentration (primary dentin R2= 0.79; permanent dentin R2= 0.73). Mean (sd) values of dissolved primary dentin after 5, 10 and 15 seconds were 1.00 (0.25), 1.74 (0.11) and 2.30 (0.42), whereas for permanent dentin the values were 0.47 (0.13), 0.89 (0.36) and 1.38 (0.20) ug Ca/mm2, respectively. Greater calcium solubilization (P< 0.05) was detected for primary dentin than for permanent dentin after all acid etching times. © 2012 P & G. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-08-01 2022-04-29T04:59:19Z 2022-04-29T04:59:19Z |
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 |
American Journal of Dentistry, v. 25, n. 4, p. 235-238, 2012. 0894-8275 http://hdl.handle.net/11449/226980 2-s2.0-84867026817 |
identifier_str_mv |
American Journal of Dentistry, v. 25, n. 4, p. 235-238, 2012. 0894-8275 2-s2.0-84867026817 |
url |
http://hdl.handle.net/11449/226980 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
American Journal of Dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
235-238 |
dc.source.none.fl_str_mv |
Scopus 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 |
repositoriounesp@unesp.br |
_version_ |
1813546398390419456 |