Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|Author(s):||Laurence C. Chow;|
|Title:||Diffusion of Ions between Two Solutions Saturated With Respect to Hydroxyapatite: A Mechanism for Subsurface Demineralization of Teeth|
|Published:||July 17, 2010|
|Abstract:||Diffusion-controlled dissolution and precipitation reactions occur in many biological systems and some non-stirred in vitro systems. Previous studies have shown that differences in the diffusion rates of ions involved in a dissolution/precipitation reaction can produce significant effects on the rate and course of the reaction. We report here results of a study that show inter-diffusion of ions between two solutions, both saturated with respect to hydroxyapatite but with dissimilar compositions, resulted in one solution becoming undersaturated and the other supersaturated. A model is proposed that may explain the formation of a mineral-dense layer in the caries process.|
|Citation:||Journal of Research (NIST JRES) -|
|Pages:||pp. 217 - 224|
|Keywords:||Dissolution, precipitation, diffusion, calcium phosphate, hydroxyapatite, caries, demineralization|
|Research Areas:||Biomaterials, Materials Science|
|PDF version:||Click here to retrieve PDF version of paper (421KB)|