Alkali-soluble and insoluble fluoride in erupted and unerupted human enamel from a high fluoride area with a low fluorosis score
| Autor: | S R Grobler, T.J.V.W. Kotze, J.F. Van Zyl, I. Stander |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Fluorosis
Dental Potassium Compounds Dentistry Statistics Nonparametric Fluorides chemistry.chemical_compound stomatognathic system Fluoridation Hydroxides Dentifrice Humans Tooth Unerupted Dental Enamel General Dentistry Enamel paint Chemistry business.industry Fluorapatite Cell Biology General Medicine Hydrogen-Ion Concentration Alkali metal stomatognathic diseases Solubility Otorhinolaryngology visual_art visual_art.visual_art_medium Molar Third business Fluoride Toothpastes Nuclear chemistry |
| Zdroj: | Archives of Oral Biology. 39:679-684 |
| ISSN: | 0003-9969 |
| DOI: | 10.1016/0003-9969(94)90093-0 |
| Popis: | The amounts of fluoroapatite and 'CaF2-like' fluoride (F) were determined in enamel of unerupted and erupted teeth that had been exposed in vivo to 1.8-2.6 parts/10(6) F in the drinking water and to brushing with F dentifrice at least once a day, and occasionally to a F mouth-rinse (0.022% F). Enamel was sampled by acid-etching and the F levels were measured with an adapted F ion-selective electrode. More F was built into the deeper enamel in the high-F area than in a similar low-F area. Unerupted enamel did not etch significantly (p0.05) deeper than erupted enamel. No significant differences (p0.05) were found in the F concentrations amongst the following: alkali-washed erupted, unwashed erupted, alkali-washed unerupted and unwashed unerupted at the outer most enamel (approx. 6 microns). However the erupted enamel (alkali-washed or not) showed higher F levels than unerupted enamel (alkali-washed or not) between approx. 6 microns and greater than 100 microns. The increase of F for this high-F area was about 100% in the deeper enamel while for a low-F area it was approx. 78% in the most outer enamel with no increase after a depth of about 20 microns. In contrast to a similar low-F area (water F0.10 parts/10(6)), no significant 'CaF2-like' F could be detected in erupted or unerupted enamel for the high-F area. |
| Databáze: | OpenAIRE |
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