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Fluoride distribution in teeth using a silicate model.

M L Swartz, R W Phillips, H E Clark

    Journal of Dental Research
    |October 1, 1980
    PubMed
    Summary
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    Dental restorations using fluoride-containing silicate cement significantly increase tooth enamel fluoride levels. Fluoride-free silicates showed no significant difference in enamel fluoride content before and after restoration.

    Area of Science:

    • Dental Materials Science
    • Cariology
    • Biomineralization

    Background:

    • Dental restorations are crucial for tooth repair.
    • The fluoride content of restorative materials can influence tooth structure.
    • Understanding fluoride uptake in enamel near restorations is important for caries prevention.

    Purpose of the Study:

    • To investigate the effect of silicate cement restorations on fluoride levels in tooth enamel.
    • To compare fluoride uptake in enamel near and away from restorations.
    • To differentiate the effects of fluoride-containing versus fluoride-free silicate cements.

    Main Methods:

    • Enamel biopsies were obtained from extracted teeth before and after restoration.
    • Teeth were restored using either fluoride-containing or fluoride-free silicate cement.

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  • Fluoride concentrations were measured at two sites: near the restoration and at least 3 mm away.

    • Main Results:

    • No significant difference in enamel fluoride was observed between pre- and post-restoration biopsies when using fluoride-free silicate cement.
    • Teeth restored with fluoride-containing silicate cement showed significantly higher fluoride levels in post-restoration biopsies compared to pre-restoration biopsies.
    • Elevated fluoride levels were detected both near and away from the restoration sites when using fluoride-containing materials.

    Conclusions:

    • Fluoride-containing silicate cements demonstrably increase fluoride concentration in adjacent tooth enamel.
    • The fluoride released from these restorative materials can diffuse into the enamel structure.
    • This fluoride enrichment may have implications for enhancing the caries resistance of the restored tooth.