Fluoride Concentration In Dentifrices Marketed In Argentina

Objectives

The objective of this study was to determine the different forms of fluoride available in dentifrices commercialized in Argentina.

Methods

33 different brands of fluoridated dentifrices were purchased in different cities of Argentina. The total fluoride (TF), total soluble fluoride (TSF), and ionic fluoride (IF) of two samples of each brand were analyzed (μg F/mL) by ion-specific fluorine electrodes.

Results

67% of dentifrices showed fluoride content that compromises anti-caries activity. 54.5% were formulated with Sodium Fluoride (NaF), 36.3% formulated with Sodium monofluorophosphate (MFP), 3% NaF associated with MFP, and 9% Stannous Fluoride (SnF2). The TF found was less than the amount declared by the manufacturer in all the brands analyzed. The concentration of TF found in the fluoride dentifrices ranged from 590.3 to 1381.4 μg/mL F, TSF ranged from 343.1 to 1258.3 μg/mL F, and IF ranged from 13.1 to 913 μg/mL F.

Conclusion

The concentrations of TF were below the reported values. TSF and IF were lower than the total fluoride concentration. Most of the samples studied have TSF concentration that compromises anti-caries effect. Additional studies with a larger number of samples are suggested to obtain more data.

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