Simplified methods of topical fluoride administration: effects in individuals with hyposalivation

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The aim was to compare fluoride (F) levels in individuals with normal salivary secretion and hyposalivation in connection with their use of F solutions and toothpaste.Seven individuals with normal salivation and nine with hyposalivation rinsed with 0.2% NaF solution for 1 minute. In addition, individuals with hyposalivation performed the following: (i) 0.2% NaF rinsing for 20 seconds, (ii) rubbing oral mucosa with a swab soaked with 0.2% NaF solution, and (iii) brushing with 5,000 ppm F (1.1% NaF) toothpaste.Subjects characterized by hyposalivation reached approximately five times higher peak values of F concentrations in saliva after 1 minute rinsing with the F solution and higher area under the curve (AUC) values. The simplified methods exhibited the same AUC values as did 1 minute of rinsing. Brushing with 5,000 ppm F toothpaste resulted in higher AUC values than did the simplified methods.The F concentrations reached higher levels in individuals with hyposalivation compared to those with normal salivation. The simplified methods tested showed similar effects as conventional methods.

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