Low-fluoride dentifrice and the effect of post-brushing rinsing on fluoride availability in saliva

  • C. B. Zamataro
  • L. M. A. TenutaEmail author
  • J. A. Cury


Aim: Post-brushing water rinsing may reduce the risk of fluoride (F) ingestion from dentifrice, however the decreased salivary F bioavailability may compromise any consequent anticaries benefits. As the use of low-F concentration dentifrices is still a matter of debate, a comparison was made between the salivary F bioavailability after brushing with a conventional F dentifrice followed by a water rinse and after brushing with a low-F dentifrice without post-brushing rinse. study design and methods: In a crossover, blind study, F concentration in saliva of 5 adult volunteers was determined after brushing with a low-F dentifrice (500 μg F/g) or with a conventional F concentration dentifrice (1100 μg F/g), followed or not by a 15-mL water rinse. Results: Salivary F bioavailability was reduced by 2.5 times when a water rinse was used (p<0.05), irrespective of dentifrice concentration, and it was 2 times lower for the low-F dentifrice (p<0.05). The salivary F bioavailability was similar when the low-F dentifrice was used without post-brushing rinse and the conventional F dentifrice was followed by a rinse (p>0.05). Conclusion: Habits of post-brushing rinse should be taken into account on the recommendation of dentifrice use by young children, considering the risks and benefits balance of F use.

Key words

Fluoride saliva dentifrice low-fluoride rinse 


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Copyright information

© Adis International 2008

Authors and Affiliations

  • C. B. Zamataro
    • 1
  • L. M. A. Tenuta
    • 1
    Email author
  • J. A. Cury
    • 1
  1. 1.Faculty of Dentistry of Piracicaba, UNICAMPPiracicabaBrazil

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