| New insights into structural alteration of enamel apatite induced by citric acid and sodium fluoride solutions. | |
| | |
MedLine Citation:
|
PMID: 18588337 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Attenuated total reflectance infrared spectroscopy and complementary scanning electron microscopy were applied to analyze the surface structure of enamel apatite exposed to citric acid and to investigate the protective potential of fluorine-containing reagents against citric acid-induced erosion. Enamel and, for comparison, geological hydroxylapatite samples were treated with aqueous solutions of citric acid and sodium fluoride of different concentrations, ranging from 0.01 to 0.5 mol/L for citric acid solutions and from 0.5 to 2.0% for fluoride solutions. The two solutions were applied either simultaneously or consecutively. The citric acid-induced structural modification of apatite increases with the increase in the citric acid concentration and the number of treatments. The application of sodium fluoride alone does not suppress the atomic level changes in apatite exposed to acidic agents. The addition of sodium fluoride to citric acid solutions leads to formation of surface CaF2 and considerably reduces the changes in the apatite P-O-Ca framework. However, the CaF2 globules deposited on the enamel surface seem to be insufficient to prevent the alteration of the apatite structure upon further exposure to acidic agents. No evidence for fluorine-induced recovery of the apatite structure was found. |
| | |
Authors:
|
Xiaojie Wang; Arndt Klocke; Boriana Mihailova; Lubomira Tosheva; Ulrich Bismayer |
Related Documents
:
|
11705257 - Low molecular weight organic acids and fatty acids in root exudates of two lupinus cult... 7583017 - Activity and stability of a new sweet protein with taste-modifying action, curculin. 12033807 - Organic acids from leaves, fruits, and rinds of garcinia cowa. 22186717 - Interlaboratory agreement and handling variability for consistency of results in paired... 58417 - Human pituitary growth hormone: restoration of full biological activity by noncovalent ... 23282537 - Access to any site directed stable isotope (2h, 13c, 15n, 17o and 18o) in genetically e... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-06-28 |
Journal Detail:
|
Title: The journal of physical chemistry. B Volume: 112 ISSN: 1520-6106 ISO Abbreviation: J Phys Chem B Publication Date: 2008 Jul |
Date Detail:
|
Created Date: 2008-07-18 Completed Date: 2008-11-13 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101157530 Medline TA: J Phys Chem B Country: United States |
Other Details:
|
Languages: eng Pagination: 8840-8 Citation Subset: IM |
Affiliation:
|
Institute of Mineralogy and Petrology, Department of Earth Sciences, University of Hamburg, Grindelallee 48, D-20146 Hamburg, Germany. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Calcium
/
chemistry,
metabolism Calcium Fluoride / chemistry, metabolism Cariostatic Agents / pharmacology* Citric Acid* Dental Enamel / chemistry*, metabolism Durapatite / chemistry*, metabolism Fluorides / pharmacology* Hydrogen-Ion Concentration Microscopy, Electron, Scanning Oxygen / chemistry, metabolism Phosphorus / chemistry, metabolism Sodium Fluoride* Solutions / chemistry Spectrophotometry, Infrared Tooth Erosion* / chemically induced, pathology, prevention & control Water / chemistry |
| Chemical | |
Reg. No./Substance:
|
0/Cariostatic Agents; 0/Fluorides; 0/Solutions; 1306-06-5/Durapatite; 7440-70-2/Calcium; 7681-49-4/Sodium Fluoride; 77-92-9/Citric Acid; 7723-14-0/Phosphorus; 7732-18-5/Water; 7782-44-7/Oxygen; 7789-75-5/Calcium Fluoride |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Spontaneous formation of super water-repellent fractal surfaces in mixed wax systems.
Next Document: Order-order and order-disorder transitions in thin films of an amphiphilic liquid crystalline dibloc...