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The Influence of Fluoride Exposure on Dentin Mineralization Using an in Vitro Organ Culture Model

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Abstract

This study aimed to characterize fluoride-induced alterations in dentin mineralization within a dentin-pulp organ culture system. Tooth sections derived from male Wistar rat incisors were cultured in Trowel-type culture for 14 days, in the presence of 0 mM, 1 mM, 3 mM and 6 mM sodium fluoride. Tooth sections were processed and analyzed for uptake of fluoride, its subsequent effect on dentin mineralization by tetracycline hydrochloride incorporation and mineral composition, expressed as calcium/phosphorous (Ca/P) ratios. Tetracycline hydrochloride incorporation was demonstrated to decrease with increased fluoride exposure, accompanied by significant increases in both Ca/P ratios and fluoride incorporation. These findings provide further evidence that the established alterations in dentin formation during fluorosis are a consequence of disruption to the mineralization process, and provide a model system with which to investigate further the potential role the extracellular matrix plays in inducing the apparent changes in mineral composition.

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Acknowledgements

We gratefully acknowledge the funding of this research by The Wellcome Trust (Grant N° 054420) and for a Research Fellowship to support Dr. R. Moseley. We also wish to express our gratitude to Mrs. G. Smith and Mrs. W. G. Rowe for their assistance during the course of this study.

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Author notes

  1. R. Moseley

    Present address: Department of Oral Surgery, Medicine & Pathology, Dental School, University of Wales College of Medicine, Cardiff, UK

Authors and Affiliations

  1. Matrix Biology & Tissue Repair Research Unit, Department of Dental Health & Biological Sciences, Dental School, University of Wales College of Medicine, Heath Park, Cardiff, UK

    R. Moseley

  2. Oral Biology, School of Dentistry, St. Chads Queensway, Birmingham, UK

    R. J. Waddington, A. J. Sloan & A. J. Smith

  3. Department of Clinical Dental Sciences, Edwards Building, School of Dentistry, University of Liverpool, Daulby Street, Liverpool, UK

    R. C. Hall & G. Embery

Authors
  1. R. Moseley
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  2. R. J. Waddington
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  3. A. J. Sloan
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  4. A. J. Smith
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  5. R. C. Hall
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  6. G. Embery
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Correspondence to R. J. Waddington.

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Moseley, R., Waddington, R., Sloan, A. et al. The Influence of Fluoride Exposure on Dentin Mineralization Using an in Vitro Organ Culture Model . Calcif Tissue Int 73, 470–475 (2003). https://doi.org/10.1007/s00223-003-0022-8

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  • DOI: https://doi.org/10.1007/s00223-003-0022-8

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