Effect of time in hardness test on artificially demineralized human dental enamel
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
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/8643022 |
Resumo: | A cross-sectional microhardness (CSMH) test was carried out in human dental enamel exposed to a demineralizing solution in order to evaluate two different times of indentation in sound tissue and artificially induced caries. Twenty caries-free extracted human molars had one of their smooth surfaces sectioned and the enamel surface was isolated with nail polish except for an area of 6 mm2 . These specimens were submitted to artificially induced enamel caries on a lactate buffer containing 0.1 ppm fluoride (F) during 28 days. All specimens were bisected to create groups A and B in which CSMH test was performed employing a Knoop indenter with a 25 g load for 5 or 10 s, respectively. Student’s paired t-test (p<0.05) was used to determine statistically significant differences between groups A and B in 7 depths. There were no significant differences between any of the analyzed depths. Since the present experiment showed no significant difference when comparing indentations made with a 25 g load during either 5 or 10 s in different depths, this method can be used with either one of the time intervals tested without compromising a CSMH test on artificially demineralized human enamel. |
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Brazilian journal of oral sciences (Online) |
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Effect of time in hardness test on artificially demineralized human dental enamelDental enamel. Tooth demineralization. Hardness testsOdontologiaA cross-sectional microhardness (CSMH) test was carried out in human dental enamel exposed to a demineralizing solution in order to evaluate two different times of indentation in sound tissue and artificially induced caries. Twenty caries-free extracted human molars had one of their smooth surfaces sectioned and the enamel surface was isolated with nail polish except for an area of 6 mm2 . These specimens were submitted to artificially induced enamel caries on a lactate buffer containing 0.1 ppm fluoride (F) during 28 days. All specimens were bisected to create groups A and B in which CSMH test was performed employing a Knoop indenter with a 25 g load for 5 or 10 s, respectively. Student’s paired t-test (p<0.05) was used to determine statistically significant differences between groups A and B in 7 depths. There were no significant differences between any of the analyzed depths. Since the present experiment showed no significant difference when comparing indentations made with a 25 g load during either 5 or 10 s in different depths, this method can be used with either one of the time intervals tested without compromising a CSMH test on artificially demineralized human enamel.Universidade Estadual de Campinas2016-09-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/864302210.20396/bjos.v7i24.8643022Brazilian Journal of Oral Sciences; v. 7 n. 24 (2008): Jan./Mar; 1507-1511Brazilian Journal of Oral Sciences; Vol. 7 No. 24 (2008): Jan./Mar; 1507-15111677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8643022/10576Marsillac, Mirian de Waele SouchoisDelbem, Alberto Carlos BotazzoVieira, Ricardo de Sousainfo:eu-repo/semantics/openAccess2016-09-23T14:41:49Zoai:ojs.periodicos.sbu.unicamp.br:article/8643022Revistahttps://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:2016-09-23T14:41:49Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Effect of time in hardness test on artificially demineralized human dental enamel |
title |
Effect of time in hardness test on artificially demineralized human dental enamel |
spellingShingle |
Effect of time in hardness test on artificially demineralized human dental enamel Marsillac, Mirian de Waele Souchois Dental enamel. Tooth demineralization. Hardness tests Odontologia |
title_short |
Effect of time in hardness test on artificially demineralized human dental enamel |
title_full |
Effect of time in hardness test on artificially demineralized human dental enamel |
title_fullStr |
Effect of time in hardness test on artificially demineralized human dental enamel |
title_full_unstemmed |
Effect of time in hardness test on artificially demineralized human dental enamel |
title_sort |
Effect of time in hardness test on artificially demineralized human dental enamel |
author |
Marsillac, Mirian de Waele Souchois |
author_facet |
Marsillac, Mirian de Waele Souchois Delbem, Alberto Carlos Botazzo Vieira, Ricardo de Sousa |
author_role |
author |
author2 |
Delbem, Alberto Carlos Botazzo Vieira, Ricardo de Sousa |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Marsillac, Mirian de Waele Souchois Delbem, Alberto Carlos Botazzo Vieira, Ricardo de Sousa |
dc.subject.por.fl_str_mv |
Dental enamel. Tooth demineralization. Hardness tests Odontologia |
topic |
Dental enamel. Tooth demineralization. Hardness tests Odontologia |
description |
A cross-sectional microhardness (CSMH) test was carried out in human dental enamel exposed to a demineralizing solution in order to evaluate two different times of indentation in sound tissue and artificially induced caries. Twenty caries-free extracted human molars had one of their smooth surfaces sectioned and the enamel surface was isolated with nail polish except for an area of 6 mm2 . These specimens were submitted to artificially induced enamel caries on a lactate buffer containing 0.1 ppm fluoride (F) during 28 days. All specimens were bisected to create groups A and B in which CSMH test was performed employing a Knoop indenter with a 25 g load for 5 or 10 s, respectively. Student’s paired t-test (p<0.05) was used to determine statistically significant differences between groups A and B in 7 depths. There were no significant differences between any of the analyzed depths. Since the present experiment showed no significant difference when comparing indentations made with a 25 g load during either 5 or 10 s in different depths, this method can be used with either one of the time intervals tested without compromising a CSMH test on artificially demineralized human enamel. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09-23 |
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/8643022 10.20396/bjos.v7i24.8643022 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8643022 |
identifier_str_mv |
10.20396/bjos.v7i24.8643022 |
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/8643022/10576 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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. 7 n. 24 (2008): Jan./Mar; 1507-1511 Brazilian Journal of Oral Sciences; Vol. 7 No. 24 (2008): Jan./Mar; 1507-1511 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 |
_version_ |
1800216401635442688 |