Timing of fluoride toothpaste use and enamel-dentin demineralization

Kusano, Sandro Carvalho; Tenuta, Lívia Maria Andaló; Cury, Altair Antoninha Del Bel; Cury, Jaime Aparecido

doi:10.1590/s1806-83242011000500002

Cited by 17 publications

(12 citation statements)

References 23 publications

(26 reference statements)

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“…Thus, despite the fact that dentine mineral is more soluble than enamel [Hoppenbrouwers et al, 1987], and also considering that the cariogenic challenge was carried out 8 times per day, the fluoride present in dentifrice was able to reduce caries progression on this substrate. The importance of FD used at frequencies of once [Kusano et al, 2011] or 3 times a day [Hara et al, 2003;Cenci et al, 2008;Vale et al, 2011] 139 root-dentine demineralization was already known and was confirmed by this study.…”

Section: Discussionsupporting

confidence: 82%

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Frequency of Fluoride Dentifrice Use and Caries Lesions Inhibition and Repair

et al. 2016

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The clinical relevance of the frequency of fluoride dentifrice (FD) use on enamel caries is based on evidence. However, the relative effect of FD on reduction of demineralization or enhancement of remineralization is unknown and the effect of frequency on root dentine caries has not been explored. The aim of this double-blind, crossover, in situ study, which was conducted in 4 phases of 14 days each, was to evaluate the relationship between the frequency of FD use and enamel and root dentine de- and remineralization. Eighteen volunteers wore palatal appliances containing enamel and root dentine slabs, either sound or carious. Biofilm accumulation on the slab surface was allowed, and 20% sucrose solution was dripped 3 or 8 times per day on the carious and sound slabs, respectively. Volunteers used FD (1,100 μg F/g) in the frequencies 0 (fluoride-placebo dentifrice), 1, 2 and 3 times per day. The demineralization and remineralization that occurred in sound or carious slabs was estimated by the percentage of surface hardness loss (%SHL) or recovery (%SHR). Loosely (CaF₂) and firmly (FAp) bound fluoride concentrations were also determined. The relationship between the variables was analyzed by linear regression. The %SHL, CaF₂ and FAp concentrations were a function of the frequency of FD use for enamel and dentine, but the %SHR was a function of the frequency of FD use only for enamel (p < 0.05). The results suggest that demineralization in enamel and root dentine is reduced in proportion to the frequency of FD use, but for remineralization the effect of the frequency of FD use was relevant only to enamel.

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Section: Discussionsupporting

confidence: 82%

“…FD is able not only to reduce caries progression on sound enamel-dentine surfaces ('preventive effect'), but also able to remineralize preexisting caries lesions ('therapeutic effect'). These effects can be influenced by certain factors, such as the fluoride concentration [Walsh et al, 2010], the time of day of FD use [Kusano et al, 2011] and …”

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confidence: 99%

Frequency of Fluoride Dentifrice Use and Caries Lesions Inhibition and Repair

et al. 2016

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“…Surface hardness data were taken as the only indicator of mineral loss [Cury et al, , 2010Kusano et al, 2011;Vale et al, 2011] in this study since, as shown in figure 1 b, the area of hardness loss was not sensitive to levels above 250 ppm F. Surprisingly, given its central role in the mechanism of F in reducing caries [Margolis and Moreno, 1990;Vogel et al, 1990;Vogel, 2011], overnight biofilm fluid F levels only increased about twice with the use of the Ca prerinse, and this increase was not significantly higher (p = 0.068) than the 250 ppm F rinse alone. Only the 1,000 ppm F rinse produced a 4× significant increase in this parameter.…”

Section: Discussionmentioning

confidence: 99%

Calcium Prerinse before Fluoride Rinse Reduces Enamel Demineralization: An in situ Caries Study

Souza

Tenuta²,

Cury³

et al. 2016

Caries Res

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A calcium (Ca) prerinse before a fluoride (F) rinse has been shown to increase oral F levels. We tested the anticaries effect of this combination in a dose-response in situ caries model. In a double-blind, crossover experiment, 10 volunteers carried enamel slabs in palatal appliances for 14 days, during which they rinsed twice/day with one of four rinse combinations: (1) a placebo prerinse (150 mM sodium lactate) followed by a distilled water rinse (negative control); (2) a placebo prerinse followed by a 250 ppm F rinse; (3) a placebo prerinse followed by a 1,000 ppm F rinse, or (4) a Ca prerinse (150 mM Ca, as calcium lactate) followed by a 250 ppm F rinse. Sucrose solution was dripped onto the slabs 8×/day to simulate a high cariogenic challenge. The percent surface hardness loss (%SHL) was significantly lower in the Ca prerinse used with the 250 ppm F rinse group (%SHL = 38.0 ± 21.0) when compared with the F rinse alone (%SHL = 59.5 ± 24.1) and similar to the 1,000 ppm F rinse group (%SHL = 42.0 ± 18.3). Compared with the 250 ppm F rinse, the Ca prerinse increased biofilm fluid F only twice (nonsignificant). However, it greatly increased F in biofilm solids (∼22×). The Ca prerinse had little effect on loosely or firmly bound enamel F. The results showed an increased level of protection against demineralization by the use of a Ca prerinse, which seems to be caused by the enhancement of F concentration in the biofilm.

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“…O fluoreto atua no processo de desmineralização e remineralização. A remineralização ocorre quando os níveis de fluoreto na saliva e no biofilme se encontram supersaturados em relação ao esmalte, mesmo em pH crítico 12 . A presença constante do fluoreto (principalmente o fluoreto presente no creme dental) é responsável pela formação de fluoreto de cálcio, que atuará nas superfícies do esmalte, dentina e cemento durante o processo de desmineralização e remineralização 13,14 .…”

Section: Variáveisunclassified

Avaliação do conhecimento das famílias sobre a higienização bucal e o uso domiciliar de fluoretos em crianças de uma faculdade particular do Espírito Santo

Camatta

Steiner‐Oliveira

2019

J Health Biol Sci.

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Introdução: cárie dentária é um problema de saúde pública e compromete a qualidade de vida dos indivíduos. O uso de dentifrícios fluoretados associado à escovação mecânica vem sendo bastante estudado como controle da doença. O objetivo, deste estudo, foi avaliar o conhecimento dos pais e/ou responsáveis por crianças frequentadoras da Clínica Odontológica da Faculdade Faesa (ES), sobre a higienização bucal e o uso de dentifrício fluoretado. Métodos: foram analisados 46 questionários, contendo 12 questões objetivas. Resultados: a análise estatística descritiva dos dados demonstrou que 78,3% das crianças utilizavam dentifrício fluoretado, 93,5% dos pais não sabiam a concentração de fluoreto presente no creme dental das crianças, desconheciam o momento para se introduzir o dentifrício fluoretado; 60,9% dos pais não sabiam o que poderia ocorrer a partir da ingestão do dentifrício fluoretado e 71,4% responderam que a função do fluoreto era prevenir a cárie. Para 50,0% das famílias, a introdução do creme dental fluoretado foi apenas a partir do segundo ano de vida e apenas 4,4% sabiam que as lesões de cárie se iniciam pela presença de uma mancha branca. Conclusão: pais e/ou responsáveis possuem conhecimento sobre a função do fluoreto, a quantidade de dentifrício que deve ser utilizada em cada faixa etária; porém, desconhecem a concentração de fluoreto presente no creme dental, não sabem o momento correto para introduzir o dentifrício fluoretado ou os riscos de desenvolvimento de fluorose dentária.

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Timing of fluoride toothpaste use and enamel-dentin demineralization

Cited by 17 publications

References 23 publications

Frequency of Fluoride Dentifrice Use and Caries Lesions Inhibition and Repair

Frequency of Fluoride Dentifrice Use and Caries Lesions Inhibition and Repair

Calcium Prerinse before Fluoride Rinse Reduces Enamel Demineralization: An in situ Caries Study

Avaliação do conhecimento das famílias sobre a higienização bucal e o uso domiciliar de fluoretos em crianças de uma faculdade particular do Espírito Santo

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