TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | https://www.revistas.usp.br/jaos/article/view/201484 |
Resumo: | The effect of fluoride agents on the retention of orthodontic brackets to enamel under erosive challenge is little investigated. Objective: The aim of this study was to evaluate the effect of titanium tetrafluoride (TiF<i>4</i>) and sodium fluoride (NaF) agents on the shear bond strength of brackets to enamel and on the enamel microhardness around brackets under erosive challenge. Methods: Brackets were bonded to bovine incisors. Five groups were formed according to fluoride application (n=10): TiF<i>4</i> varnish, TiF<i>4</i> solution, NaF varnish, NaF solution and control (without application). The specimens were submitted to erosive challenge (90 s cola drink/2h artificial saliva, 4x per day for 7 days). Solutions were applied before each erosive cycle and varnishes were applied once. Vickers Microhardness (VHN) was obtained before and after all cycles of erosion and the percentage of microhardness loss was calculated. Shear bond strength, adhesive remnant index and polarized light microscopy were conducted after erosion. The data were analyzed by ANOVA, Tukey, Kruskal-Wallis and Mann-Whitney U tests (α=0.05). Results: The %VHN had no statistically significant differences among the experimental groups. However, considering the comparisons of all groups with the control group, TiF<i>4</i> varnish showed the highest protection from enamel demineralization (effect size of 2.94, while the effect size for the other groups was >2.4). The TiF<i>4</i> varnish group had significantly higher shear bond strength compared to other groups. There was no difference among groups for adhesive remnant index. Polarized light microscopy showed higher demineralization depth for the control group. Conclusions: Application of NaF and TiF<i>4</i> agents during mild erosive challenge minimized the enamel mineral loss around brackets, however only the experimental TiF<i>4</i> varnish was able to prevent the reduction of shear bond strength of brackets to enamel. |
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Journal of applied oral science (Online) |
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spelling |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challengeBracketsFluoridesShear bond strengthTooth erosionThe effect of fluoride agents on the retention of orthodontic brackets to enamel under erosive challenge is little investigated. Objective: The aim of this study was to evaluate the effect of titanium tetrafluoride (TiF<i>4</i>) and sodium fluoride (NaF) agents on the shear bond strength of brackets to enamel and on the enamel microhardness around brackets under erosive challenge. Methods: Brackets were bonded to bovine incisors. Five groups were formed according to fluoride application (n=10): TiF<i>4</i> varnish, TiF<i>4</i> solution, NaF varnish, NaF solution and control (without application). The specimens were submitted to erosive challenge (90 s cola drink/2h artificial saliva, 4x per day for 7 days). Solutions were applied before each erosive cycle and varnishes were applied once. Vickers Microhardness (VHN) was obtained before and after all cycles of erosion and the percentage of microhardness loss was calculated. Shear bond strength, adhesive remnant index and polarized light microscopy were conducted after erosion. The data were analyzed by ANOVA, Tukey, Kruskal-Wallis and Mann-Whitney U tests (α=0.05). Results: The %VHN had no statistically significant differences among the experimental groups. However, considering the comparisons of all groups with the control group, TiF<i>4</i> varnish showed the highest protection from enamel demineralization (effect size of 2.94, while the effect size for the other groups was >2.4). The TiF<i>4</i> varnish group had significantly higher shear bond strength compared to other groups. There was no difference among groups for adhesive remnant index. Polarized light microscopy showed higher demineralization depth for the control group. Conclusions: Application of NaF and TiF<i>4</i> agents during mild erosive challenge minimized the enamel mineral loss around brackets, however only the experimental TiF<i>4</i> varnish was able to prevent the reduction of shear bond strength of brackets to enamel.Universidade de São Paulo. Faculdade de Odontologia de Bauru2022-08-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/20148410.1590/1678-7757-2017-0222Journal of Applied Oral Science; Vol. 26 (2018); e20170222Journal of Applied Oral Science; Vol. 26 (2018); e20170222Journal of Applied Oral Science; v. 26 (2018); e201702221678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/201484/185561Copyright (c) 2022 Journal of Applied Oral Sciencehttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMedeiros, Maria Isabel Dantas deCarlo, Hugo LemesSantos, Rogério Lacerda dosSousa, Frederico BarbosaCastro, Ricardo Dias deFrança, Renata Cristina SobreiraCarvalho, Fabíola Galbiatti de2022-08-25T19:17:57Zoai:revistas.usp.br:article/201484Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2022-08-25T19:17:57Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
title |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
spellingShingle |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge Medeiros, Maria Isabel Dantas de Brackets Fluorides Shear bond strength Tooth erosion |
title_short |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
title_full |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
title_fullStr |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
title_full_unstemmed |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
title_sort |
TiF 4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge |
author |
Medeiros, Maria Isabel Dantas de |
author_facet |
Medeiros, Maria Isabel Dantas de Carlo, Hugo Lemes Santos, Rogério Lacerda dos Sousa, Frederico Barbosa Castro, Ricardo Dias de França, Renata Cristina Sobreira Carvalho, Fabíola Galbiatti de |
author_role |
author |
author2 |
Carlo, Hugo Lemes Santos, Rogério Lacerda dos Sousa, Frederico Barbosa Castro, Ricardo Dias de França, Renata Cristina Sobreira Carvalho, Fabíola Galbiatti de |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Medeiros, Maria Isabel Dantas de Carlo, Hugo Lemes Santos, Rogério Lacerda dos Sousa, Frederico Barbosa Castro, Ricardo Dias de França, Renata Cristina Sobreira Carvalho, Fabíola Galbiatti de |
dc.subject.por.fl_str_mv |
Brackets Fluorides Shear bond strength Tooth erosion |
topic |
Brackets Fluorides Shear bond strength Tooth erosion |
description |
The effect of fluoride agents on the retention of orthodontic brackets to enamel under erosive challenge is little investigated. Objective: The aim of this study was to evaluate the effect of titanium tetrafluoride (TiF<i>4</i>) and sodium fluoride (NaF) agents on the shear bond strength of brackets to enamel and on the enamel microhardness around brackets under erosive challenge. Methods: Brackets were bonded to bovine incisors. Five groups were formed according to fluoride application (n=10): TiF<i>4</i> varnish, TiF<i>4</i> solution, NaF varnish, NaF solution and control (without application). The specimens were submitted to erosive challenge (90 s cola drink/2h artificial saliva, 4x per day for 7 days). Solutions were applied before each erosive cycle and varnishes were applied once. Vickers Microhardness (VHN) was obtained before and after all cycles of erosion and the percentage of microhardness loss was calculated. Shear bond strength, adhesive remnant index and polarized light microscopy were conducted after erosion. The data were analyzed by ANOVA, Tukey, Kruskal-Wallis and Mann-Whitney U tests (α=0.05). Results: The %VHN had no statistically significant differences among the experimental groups. However, considering the comparisons of all groups with the control group, TiF<i>4</i> varnish showed the highest protection from enamel demineralization (effect size of 2.94, while the effect size for the other groups was >2.4). The TiF<i>4</i> varnish group had significantly higher shear bond strength compared to other groups. There was no difference among groups for adhesive remnant index. Polarized light microscopy showed higher demineralization depth for the control group. Conclusions: Application of NaF and TiF<i>4</i> agents during mild erosive challenge minimized the enamel mineral loss around brackets, however only the experimental TiF<i>4</i> varnish was able to prevent the reduction of shear bond strength of brackets to enamel. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-25 |
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://www.revistas.usp.br/jaos/article/view/201484 10.1590/1678-7757-2017-0222 |
url |
https://www.revistas.usp.br/jaos/article/view/201484 |
identifier_str_mv |
10.1590/1678-7757-2017-0222 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/201484/185561 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Journal of Applied Oral Science http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Journal of Applied Oral Science http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science; Vol. 26 (2018); e20170222 Journal of Applied Oral Science; Vol. 26 (2018); e20170222 Journal of Applied Oral Science; v. 26 (2018); e20170222 1678-7765 1678-7757 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1787713197493452800 |