Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da USP |
Texto Completo: | https://www.teses.usp.br/teses/disponiveis/25/25148/tde-22102021-102652/ |
Resumo: | Objective: The aim of this in vitro study was to evaluate the mineral loss of enamel treated with a glass ionomer-based sealant and a fluoride varnish after pHcycling, through the analysis of the microhardness of the enamel as well as the evaluation of Ca/P/F ratio by Energy-dispersive X-ray spectroscopy analysis (EDS). Methods: Thirty six bovine enamel blocks were analyzed for microhardness and randomly assigned to one of the following three treatment groups (n = 12): G1 Clinpro XT Varnish (3M-ESPE); G2 Duraphat (Colgate - Palmolive); or G3 No treatment. The specimens were subjected to pH-cycling for 7 days. Subsequently, they were analyzed by EDS, and the final evaluations of the microhardness at standard distances from the treatment material as well as the cross-sectional microhardness at standard distances from the outer surface of the enamel were performed. Results: The EDS findings revealed that, in G3, the loss of calcium and phosphorus was significantly higher than G1 and G2 after pH-cycling; however, there were no significant differences in the initial and final fluoride ion concentrations among the three groups. The values of the surface microhardness and crosssectional microhardness in G1 and G2 were higher than those in G3, at different distances of the materials. Conclusion: Within the limitations of this study, it may be concluded that both the evaluated materials were able to partially inhibit enamel demineralization when subjected to a dynamic pH-cycling model. |
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Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnishAvaliação do efeito anticárie de um selante ionomérico e um verniz fluoretadoDemineralizationDental enamelDesmineralizaçãoEsmalte dentalFlúorFluorideObjective: The aim of this in vitro study was to evaluate the mineral loss of enamel treated with a glass ionomer-based sealant and a fluoride varnish after pHcycling, through the analysis of the microhardness of the enamel as well as the evaluation of Ca/P/F ratio by Energy-dispersive X-ray spectroscopy analysis (EDS). Methods: Thirty six bovine enamel blocks were analyzed for microhardness and randomly assigned to one of the following three treatment groups (n = 12): G1 Clinpro XT Varnish (3M-ESPE); G2 Duraphat (Colgate - Palmolive); or G3 No treatment. The specimens were subjected to pH-cycling for 7 days. Subsequently, they were analyzed by EDS, and the final evaluations of the microhardness at standard distances from the treatment material as well as the cross-sectional microhardness at standard distances from the outer surface of the enamel were performed. Results: The EDS findings revealed that, in G3, the loss of calcium and phosphorus was significantly higher than G1 and G2 after pH-cycling; however, there were no significant differences in the initial and final fluoride ion concentrations among the three groups. The values of the surface microhardness and crosssectional microhardness in G1 and G2 were higher than those in G3, at different distances of the materials. Conclusion: Within the limitations of this study, it may be concluded that both the evaluated materials were able to partially inhibit enamel demineralization when subjected to a dynamic pH-cycling model.Objetivo: O objetivo deste estudo in vitro foi avaliar a perda mineral do esmalte bovino tratados com um selante ionomérico e um verniz fluoretado após ciclagem de pH, por meio da analise da microdureza de superfície do esmalte e seccional, além da avaliação da composição química de superfície por análise quantitativa em espectroscopia de energia dispersiva (EDS). Métodos: Trinta e seis blocos de esmalte bovino após polimento e análise da composição superficial em EDS, foram submetidos a analise da microdureza superficial e sequencialmente divididos aleatoriamente divididos em três grupos em função do tratamento empregado (n=12): G1) Clinpro XT-Varnish (3M-ESPE), G2) Duraphat (Colgate- Palmolive) e G3) Sem tratamento. Os espécimes foram submetidos à ciclagem de pH por sete dias. Posteriormente, a análise em EDS e microdureza superficial final foi realizada, onde para microdureza em distâncias padronizadas em relação ao material de tratamento, bem como a análise da microdureza longitudinal em distâncias padronizadas da superfície externa do esmalte. Resultados: A análise em EDS demonstrou que para o G3 a perda de cálcio e fósforo foi significativamente maior do que para o G1 e G2 após a ciclagem de pH, já para o íon flúor não houve diferenças significativas entre os grupos nas duas condições. A microdureza de superfície e longitudinal do esmalte nos permite inferir que maiores valores de dureza foram evidenciadas para G1 e G2 do que para G3, nas diferentes distâncias do material. Conclusão: Considerando as limitações deste estudo concluímos que ambos materiais testados foram capazes de inibir parcialmente a desmineralização do esmalte submetido a um modelo dinâmico de ciclagem de pH.Biblioteca Digitais de Teses e Dissertações da USPBombonatti, Juliana Fraga SoaresMondelli, Rafael Francisco LiaScotti, Cassiana Koch2016-04-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/25/25148/tde-22102021-102652/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2021-10-22T12:31:02Zoai:teses.usp.br:tde-22102021-102652Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212021-10-22T12:31:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish Avaliação do efeito anticárie de um selante ionomérico e um verniz fluoretado |
title |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
spellingShingle |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish Scotti, Cassiana Koch Demineralization Dental enamel Desmineralização Esmalte dental Flúor Fluoride |
title_short |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
title_full |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
title_fullStr |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
title_full_unstemmed |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
title_sort |
Evaluation of the anti-caries effect of a glass ionomer sealant and a fluoride varnish |
author |
Scotti, Cassiana Koch |
author_facet |
Scotti, Cassiana Koch |
author_role |
author |
dc.contributor.none.fl_str_mv |
Bombonatti, Juliana Fraga Soares Mondelli, Rafael Francisco Lia |
dc.contributor.author.fl_str_mv |
Scotti, Cassiana Koch |
dc.subject.por.fl_str_mv |
Demineralization Dental enamel Desmineralização Esmalte dental Flúor Fluoride |
topic |
Demineralization Dental enamel Desmineralização Esmalte dental Flúor Fluoride |
description |
Objective: The aim of this in vitro study was to evaluate the mineral loss of enamel treated with a glass ionomer-based sealant and a fluoride varnish after pHcycling, through the analysis of the microhardness of the enamel as well as the evaluation of Ca/P/F ratio by Energy-dispersive X-ray spectroscopy analysis (EDS). Methods: Thirty six bovine enamel blocks were analyzed for microhardness and randomly assigned to one of the following three treatment groups (n = 12): G1 Clinpro XT Varnish (3M-ESPE); G2 Duraphat (Colgate - Palmolive); or G3 No treatment. The specimens were subjected to pH-cycling for 7 days. Subsequently, they were analyzed by EDS, and the final evaluations of the microhardness at standard distances from the treatment material as well as the cross-sectional microhardness at standard distances from the outer surface of the enamel were performed. Results: The EDS findings revealed that, in G3, the loss of calcium and phosphorus was significantly higher than G1 and G2 after pH-cycling; however, there were no significant differences in the initial and final fluoride ion concentrations among the three groups. The values of the surface microhardness and crosssectional microhardness in G1 and G2 were higher than those in G3, at different distances of the materials. Conclusion: Within the limitations of this study, it may be concluded that both the evaluated materials were able to partially inhibit enamel demineralization when subjected to a dynamic pH-cycling model. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-29 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.teses.usp.br/teses/disponiveis/25/25148/tde-22102021-102652/ |
url |
https://www.teses.usp.br/teses/disponiveis/25/25148/tde-22102021-102652/ |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
|
dc.rights.driver.fl_str_mv |
Liberar o conteúdo para acesso público. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Liberar o conteúdo para acesso público. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
|
dc.publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da USP instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Biblioteca Digital de Teses e Dissertações da USP |
collection |
Biblioteca Digital de Teses e Dissertações da USP |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br |
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1809090999527407616 |