Evaluation of acid diffusion and fluoride selective electrode to measure the total fluoride in toothpastes / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 438-440, 2006.
Article
in Chinese
| WPRIM
| ID: wpr-249800
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the reliability of a method of measuring the total fluoride in fluoride-containing toothpastes with acid diffusion and fluoride selective electrode.</p><p><b>METHODS</b>Four brands of commercially available non-fluoride toothpastes and fluoride-containing toothpastes were sampled. Fluoride was extracted from the toothpastes in 2 mol/L HC10(4) at room temperature overnight and then subjected to the measurement with fluoride electrode.</p><p><b>RESULTS</b>Fluoride recovery of the non-fluoride toothpastes containing calcium as abrasive by this method was 99.5%-100.5%, more than 94% of total fluoride was measured from the marketed fluoride toothpastes, and the variation coefficient of this method was less than 1.54%. While the abrasive was silicon, the fluoride recovery of the non-fluoride toothpastes was 83.4%, and 89.7% of total fluoride was measured from the marketed fluoride-containing toothpastes.</p><p><b>CONCLUSION</b>The amount of total fluoride in the calcium containing toothpaste can be detected simply and accurately measured by acid diffusion and fluoride selective electrode.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Phosphates
/
Sodium Fluoride
/
Toothpastes
/
Calcium
/
Reproducibility of Results
/
Electrodes
/
Fluorides
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2006
Type:
Article
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