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Journal of Dental Research
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The Use of Saturated DCPD in Remineralization of Artificial Caries Lesions in vitro

J.S. Wefel

Dows Institute for Dental Research, College of Dentistry, University of Iowa, Iowa City, Iowa 52242

J.D. Harless

Dows Institute for Dental Research, College of Dentistry, University of Iowa, Iowa City, Iowa 52242

Dicalcium phosphate dihydrate (DCPD) may play a significant role in the caries lesion since it is a stable calcium phosphate phase under acidic conditions. The reaction of DCPD and fluoride, forming fluor-apatite (FAP), may provide a potentially promising treatment regimen for remineralization of caries lesions in vivo. The purpose of this study was to determine whether a two-step DCPD and inorganic wash with fluoride can remineralize artificial caries-like lesions in vitro. We used the single-section technique to facilitate quantitation of the same tissue before and after the experimental regimen. The two-step remineralizing treatment was repeated three times and consisted of a two-minute saturated DCPD treatment (pH 2.1) followed by a 24-hour inorganic wash. Lesion parameters were recorded before and after treatment by the taking of polarized light photomicrographs of each section after imbibition in several media. The changes in the tissue following treatment were expressed as a percent change in the area of the initial pre-treatment lesion. Significant reductions (p < 0. 02) in lesion pore volume were observed in all aqueous media examined. In the lesions after imbibition in quinoline, remineralization was also apparent from the significant increase in the area of the dark zone following treatment. This two-step DCPD treatment appears to remineralize artificial caries-like lesions effectively, but additional work is needed to determine whether it affords any protection against subsequent cariogenic challenges.

Journal of Dental Research, Vol. 66, No. 11, 1640-1643 (1987)
DOI: 10.1177/00220345870660110701
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This article has been cited by other articles:


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R.L. Ettinger, D. Manderson, J.S. Wefel, and M.E. Jensen
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