Journal of Dental Research, Vol 62, 1049-1053, Copyright © 1983 by International & American Associations for Dental Research Online Journals

ARTICLES

Acid reactivity of carbonated apatites with strontium and fluoride substitutions

J. D. Featherstone, C. P. Shields, B. Khademazad and M. D. Oldershaw

Carbonated apatites containing approximately 3.0 or 6.5% CO3 were precipitated in the presence of sodium, strontium, and/or fluoride at various concentrations. Almost all the available strontium and fluoride was incorporated into the crystals, whereas only a portion of the carbonate and sodium present was taken up. When incorporated together, Sr and F improved the crystallinity of carbonated apatites and markedly reduced their acid reactivity. This phenomenon may partially explain the observed reduction in caries for populations whose drinking water contains optimum levels of Sr at 5-10 mg/l and F at 1-2 mg/l.

This article has been cited by other articles:

				J. D.B. FEATHERSTONE THE SCIENCE AND PRACTICE OF CARIES PREVENTION J Am Dent Assoc, July 1, 2000; 131(7): 887 - 899. [Abstract] [Full Text] [PDF]