Effect of bicarbonate on fluoride reactivity with enamel

Detalhes bibliográficos
Autor(a) principal: Peres, Paulo Edelvar
Data de Publicação: 2008
Outros Autores: Santos, Denis C. L., Tabchoury, Cínthia Pereira Machado, Cury, Jaime Aparecido
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista odonto ciência (Online)
Texto Completo: https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285
Resumo: Purpose: Bicarbonate (HCO-3 ) is an alkaline and buffering substance found in dentifrices, which could improve the anti-caries effect of fluoride (F). However, HCO-3 could reduce the formation of calcium fluoride-like (CaF2), the most important product of F reactivity with enamel, whose formation is higher in low pH. The aim of this in vitro study was to evaluate if HCO-3 interferes with the reactivity of F with human enamel. Methods: Five dentifrice formulations were evaluated: placebo of F and HCO-3 (pH 7.0); HCO-3 (pH 9.0); F (pH 7.0); F (pH 9.0) and F+HCO-3 (pH 9.0). F dentifrices contained NaF and all dentifrices were silica-based. The concentrations of total F (TF), CaF2 and firmly bound F (FA, fluorapatite-like) formed in enamel after 1-min reaction with dentifrice slurries (1:3) were determined. Results: The formation of TF, CaF2 and FA was reduced in 22.1 %, 47.9 % and 4.8 %, respectively, by the presence of HCO-3 in the dentifrice formulation. Conclusion: This in vitro data suggest that addition of HCO-3 to a dentifrice may interfere with the reactivity of F with enamel, reducing mainly the concentration of CaF2 formed. Key words: Dentifrice; fluoride; baking soda; enamel; reactivity
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spelling Effect of bicarbonate on fluoride reactivity with enamelEfeito do bicarbonato na reatividade do fluoreto com esmalteDentifricefluoridebaking sodaenamelreactivityCariologyPurpose: Bicarbonate (HCO-3 ) is an alkaline and buffering substance found in dentifrices, which could improve the anti-caries effect of fluoride (F). However, HCO-3 could reduce the formation of calcium fluoride-like (CaF2), the most important product of F reactivity with enamel, whose formation is higher in low pH. The aim of this in vitro study was to evaluate if HCO-3 interferes with the reactivity of F with human enamel. Methods: Five dentifrice formulations were evaluated: placebo of F and HCO-3 (pH 7.0); HCO-3 (pH 9.0); F (pH 7.0); F (pH 9.0) and F+HCO-3 (pH 9.0). F dentifrices contained NaF and all dentifrices were silica-based. The concentrations of total F (TF), CaF2 and firmly bound F (FA, fluorapatite-like) formed in enamel after 1-min reaction with dentifrice slurries (1:3) were determined. Results: The formation of TF, CaF2 and FA was reduced in 22.1 %, 47.9 % and 4.8 %, respectively, by the presence of HCO-3 in the dentifrice formulation. Conclusion: This in vitro data suggest that addition of HCO-3 to a dentifrice may interfere with the reactivity of F with enamel, reducing mainly the concentration of CaF2 formed. Key words: Dentifrice; fluoride; baking soda; enamel; reactivityObjetivo: O bicarbonato (HCO-3 ) é uma substância alcalina e tamponante encontrada em dentifrícios, que poderia melhorar o efeito anticárie do fluoreto (F). No entanto, HCO-3 poderia reduzir a formação de fluoreto de cálcio (CaF2), o mais importante produto da reatividade do F com esmalte, cuja formação é maior em baixo pH. O objetivo deste estudo foi avaliar in vitro se o HCO-3 interfere na reatividade do F com o esmalte humano. Metodologia: Cinco formulações de dentifrícios foram avaliadas: placebo de F e HCO-3 (pH 7,0); HCO-3 (pH 9,0); F (pH 7,0); F (pH 9,0) e F+HCO-3 (pH 9,0). Os dentifrícios fluoretados continham NaF e todos continham sílica como abrasivo. As concentrações de F total (FT), CaF2 e F firmemente ligado (FA, tipo flúorapatita) formadas no esmalte após 1 minuto de reação com as suspensões dos dentifrícios (1:3) foram determinadas. Resultados: A formação de FT, CaF2 e FA foram reduzidas em 22,1 %; 47,9 % e 4,8 %, respectivamente, pela presença de HCO-3 na formulação do dentifrício. Conclusão: Os resultados in vitro sugerem que a adição de HCO-3 a um dentifrício pode interferir com a reatividade do F com o esmalte, principalmente reduzindo a concentração de CaF2 formado no esmalte. Palavras-chave: Dentifrício; flúor; fermento químico para pão; esmalte; reatividadeEDIPUCRS - Editora Universitária da PUCRS2008-11-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articlein vitroapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285Revista Odonto Ciência; Vol. 24 No. 1 (2009); 6 - 9Revista Odonto Ciência; v. 24 n. 1 (2009); 6 - 91980-65230102-9460reponame:Revista odonto ciência (Online)instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSenghttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285/3659Peres, Paulo EdelvarSantos, Denis C. L.Tabchoury, Cínthia Pereira MachadoCury, Jaime Aparecidoinfo:eu-repo/semantics/openAccess2013-11-11T13:23:39Zoai:ojs.revistaseletronicas.pucrs.br:article/4285Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2013-11-11T13:23:39Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.none.fl_str_mv Effect of bicarbonate on fluoride reactivity with enamel
Efeito do bicarbonato na reatividade do fluoreto com esmalte
title Effect of bicarbonate on fluoride reactivity with enamel
spellingShingle Effect of bicarbonate on fluoride reactivity with enamel
Peres, Paulo Edelvar
Dentifrice
fluoride
baking soda
enamel
reactivity
Cariology
title_short Effect of bicarbonate on fluoride reactivity with enamel
title_full Effect of bicarbonate on fluoride reactivity with enamel
title_fullStr Effect of bicarbonate on fluoride reactivity with enamel
title_full_unstemmed Effect of bicarbonate on fluoride reactivity with enamel
title_sort Effect of bicarbonate on fluoride reactivity with enamel
author Peres, Paulo Edelvar
author_facet Peres, Paulo Edelvar
Santos, Denis C. L.
Tabchoury, Cínthia Pereira Machado
Cury, Jaime Aparecido
author_role author
author2 Santos, Denis C. L.
Tabchoury, Cínthia Pereira Machado
Cury, Jaime Aparecido
author2_role author
author
author
dc.contributor.author.fl_str_mv Peres, Paulo Edelvar
Santos, Denis C. L.
Tabchoury, Cínthia Pereira Machado
Cury, Jaime Aparecido
dc.subject.por.fl_str_mv Dentifrice
fluoride
baking soda
enamel
reactivity
Cariology
topic Dentifrice
fluoride
baking soda
enamel
reactivity
Cariology
description Purpose: Bicarbonate (HCO-3 ) is an alkaline and buffering substance found in dentifrices, which could improve the anti-caries effect of fluoride (F). However, HCO-3 could reduce the formation of calcium fluoride-like (CaF2), the most important product of F reactivity with enamel, whose formation is higher in low pH. The aim of this in vitro study was to evaluate if HCO-3 interferes with the reactivity of F with human enamel. Methods: Five dentifrice formulations were evaluated: placebo of F and HCO-3 (pH 7.0); HCO-3 (pH 9.0); F (pH 7.0); F (pH 9.0) and F+HCO-3 (pH 9.0). F dentifrices contained NaF and all dentifrices were silica-based. The concentrations of total F (TF), CaF2 and firmly bound F (FA, fluorapatite-like) formed in enamel after 1-min reaction with dentifrice slurries (1:3) were determined. Results: The formation of TF, CaF2 and FA was reduced in 22.1 %, 47.9 % and 4.8 %, respectively, by the presence of HCO-3 in the dentifrice formulation. Conclusion: This in vitro data suggest that addition of HCO-3 to a dentifrice may interfere with the reactivity of F with enamel, reducing mainly the concentration of CaF2 formed. Key words: Dentifrice; fluoride; baking soda; enamel; reactivity
publishDate 2008
dc.date.none.fl_str_mv 2008-11-27
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
in vitro
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4285/3659
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
dc.source.none.fl_str_mv Revista Odonto Ciência; Vol. 24 No. 1 (2009); 6 - 9
Revista Odonto Ciência; v. 24 n. 1 (2009); 6 - 9
1980-6523
0102-9460
reponame:Revista odonto ciência (Online)
instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron:PUC_RS
instname_str Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron_str PUC_RS
institution PUC_RS
reponame_str Revista odonto ciência (Online)
collection Revista odonto ciência (Online)
repository.name.fl_str_mv Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
repository.mail.fl_str_mv ||odontociencia@pucrs.br
_version_ 1754820874766123008

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