Biological Trace Element Research

, Volume 137, Issue 2, pp 159-167

First online:

Salivary Fluoride Concentrations and Fluoride Ingestion Following Application of Preparations Containing High Concentration of Fluoride

  • Justyna Opydo-SzymaczekAffiliated withDepartment of Pediatric Dentistry, Poznan University of Medical Sciences Email author 
  • , Jadwiga OpydoAffiliated withInstitute of Chemistry and Technical Electrochemistry, Poznan University of Technology

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The aim of the study was to assess salivary fluoride concentrations and ingestion of fluorides after five different techniques of topical fluoride treatment. Ten volunteers received applications of fluoride gel, toothpaste, and foam. Fluoride concentrations were determined using ion-selective fluoride electrode in the samples of unstimulated saliva before and after procedures. The amounts of fluoride applied, recovered from the mouth, and retained in the mouth were calculated for each treatment. It was proved that fluoride ingestion following tray application of fluoride foam was significantly lower than ingestion following tray applications of fluoride gel (p < 0.01). The use of limited amounts of fluorides on a tray resulted in similar fluoride retention and lower ingestion comparing to the method which involves a large portion of fluorides followed by rinsing. Tooth brushing resulted in high salivary retention rates per amount of fluorides used in the procedure. These data provide initial concept about the possible advantages of some methods of topical fluoride application over others.


Topical fluoride Amine fluoride gel Fluoride foam High fluoride toothpaste Fluoride ingestion Salivary fluoride