In vivo Plaque Formation on Enamel Surfaces Treated with Topical Fluoride Agents

Dijkman, Ag; Nelson, Douglas C.; Jongebloed, W.L.; Weerkamp, Ah; Arends, J

doi:10.1159/000260895

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…About the mutans streptococci data (Table 1), the low %MS in the biofilm of the groups pre-treated with APF is in agreement with Loesche et al (1975) and Zahradnik et al (1978). This statistically significant effect of the APF gel application (Table 2) could be explained by the effects of products formed on the enamel surface, impairing the adherence of these bacteria, with reductions in the amount of dental plaque (Dijkman et al, 1985).…”

Section: Discussionsupporting

confidence: 68%

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

et al. 2004

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Since the effect of the combination of methods of fluoride use on enamel demineralization and on plaque composition is not clearly established, this study examined the effect of the combination of acidulated phosphate fluoride (APF) application and F dentifrice on enamel demineralization and on plaque composition. In this crossover study, 16 volunteers, wearing a palatal appliance containing bovine enamel blocks, were subjected to 4 treatment groups: non-fluoridated dentifrice (PD), FD, APF+PD, and APF+FD. The APF was applied to the enamel before the 14-day experimental period. During the experimental period, test dentifrices were applied 3x/day, and a 20% sucrose solution was applied 4x and 8x/day by being dripped on the blocks. Although APF application was able either to increase F concentration in plaque or to reduce the % of mutans streptococci, its combination with F dentifrice use neither reduced enamel mineral loss nor changed any other measured plaque variable with respect to the FD group alone.

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Section: Discussionsupporting

confidence: 68%

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

et al. 2004

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“…The rates of de-and remineralization were monitored by the measurement of titrant addition required to maintain constant solution composition (Tomson and Nancollas, 1978;White et al, 1988b;de Rooij and Nancollas, 1984). fiting both de-and remineralization (de Bruyn, 1987;Dijkman et al, 1985;Arends et al, 1984;Dijkman, 1982;Fejerskov et al, 1981;Mellberg, 1977).…”

Section: Methodsmentioning

confidence: 99%

Physical and Chemical Considerations of the Role of Firmly and Loosely Bound Fluoride in Caries Prevention

Nancollas

1990

J Dent Res

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Historically, there has been considerable debate concerning the roles of loosely bound (calcium fluoride) and firmly bound (fluorapatite) fluoride for caries prevention. Research now shows that fluorapatite (FAP) is a finite reaction product of enamel/apatite fluoridation with or without CaF2 formation, suggesting that CaF2 always be considered as a supplement to, rather than a substitute for, FAP formation. In the presence of low levels of fluoride in the solution phase, the crystallization of hydroxyapatite is enhanced, while the corresponding dissolution is retarded. Fluoride in the bulk FAP or CaF2 solid phase, in contrast, has limited impact on crystal growth or dissolution kinetics. Both FAP and CaF2 can provide F to the solution phase to enhance remineralization and retard demineralization of enamel HAP crystallites. The FAP provides most of this F under low pH conditions, while CaF2 provides F at neutral or lower pH. The reactivity of fluoride on sound and carious enamel differs significantly. Carious enamel acquires more fluoride, acquires it more quickly, and itself acts as a source of retained fluoride in comparison with the more limited reactivity of sound enamel. Overall, the most important question concerning fluoride reactivity relates to its efficiency in enhancing remineralization or retarding demineralization processes. This is influenced not only by the reaction products, e.g., loosely or firmly bound fluoride, but also by the nature of the enamel substrate and frequency of application of the topical fluoridating agent. Inasmuch as the reactivity of bulk HAP is dominated by surface layers of FAP material, the debate over usefulness of various fluoride reaction products solely on a chemical level is no longer critical. Instead, all factors influencing the efficiency of a fluoridating regimen must be considered in the development of improved systems for caries prevention.

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“…The accuracy of the experiment, however, is insufficient to conclude whether the CaF,-like material is pure CaF,. CaF, is supposed to be formed on enamel after topical F applications by concentrated solutions of NaF (27), SnF, solutions (28), APF solutions (l), and Fcontaining varnishes (29). Information with regard to whether pure CaF2 is formed on enamel is difficult to obtain, because the enamel is after application coated with a thin amorphous layer of the material.…”

Section: Efficiency Of the F Applicationmentioning

confidence: 99%

The role of ‘CaF₂-like’ material in topical fluoridation of enamel in situ

Dijkman

Arends

1988

Acta Odontologica Scandinavica

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In this paper the role and importance of 'CaF2-like' material deposited on enamel (Fon) by means of an APF gel and the varnishes Duraphat and Fluor Protector are described and discussed. The amount of Fon, determined by KOH extraction, is a measure of the amount of CaF2-like material on the enamel surface. Fluoride in the enamel (Fin), determined by etching, is the amount of F- bound in the solid enamel. Fon and Fin data are presented after various F- treatments and after wearing enamel slabs in dentures for a period of 1 week. The results of this work show that if we compare the three fluoridating agents, APF gel, Duraphat varnish, and Fluor Protector varnish in situ, only Fluor Protector shows a measurable amount of Fon after 1 week. The amounts of Fon acquired by the enamel surface (one application) rank as APF gel approximately Duraphat much less than Fluor Protector. Most likely, Fon in situ leaches away through the pellicle, with an apparent diffusion coefficient of about 10(-6) cm2.sec-1. The Fin data show that after APF gel or Duraphat treatment a substantial amount of Fin leaches away during 1 week in situ; the Fin values of Fluor Protector do not change. The efficiency of the fluoridating agents is most likely determined by the application period and fluoride availability. For APF gel, Duraphat, and Fluor Protector about 5%, 1%, and 44% of the available fluoride participates in the fluoridation process. CaF2-like globules are known to precipitate after gel or varnish treatment on the enamel surfaces and can be dissolved in KOH solution.(ABSTRACT TRUNCATED AT 250 WORDS)

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In vivo Plaque Formation on Enamel Surfaces Treated with Topical Fluoride Agents

Cited by 4 publications

References 13 publications

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

Physical and Chemical Considerations of the Role of Firmly and Loosely Bound Fluoride in Caries Prevention

The role of ‘CaF₂-like’ material in topical fluoridation of enamel in situ

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In vivo Plaque Formation on Enamel Surfaces Treated with Topical Fluoride Agents

Cited by 4 publications

References 13 publications

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

In situ Effect of Frequent Sucrose Exposure on Enamel Demineralization and on Plaque Composition after APF Application and F Dentifrice Use

Physical and Chemical Considerations of the Role of Firmly and Loosely Bound Fluoride in Caries Prevention

The role of ‘CaF2-like’ material in topical fluoridation of enamel in situ

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The role of ‘CaF₂-like’ material in topical fluoridation of enamel in situ