Fluoride retention in saliva and in dental biofilm after different home-use fluoride treatments

Abstract

This single-blind, randomized, crossover study aimed at assessing the long-term fluoride concentrations in saliva and in dental biofilm after different home-use fluoride treatments. The study volunteers (n = 38) were residents of an area with fluoridated drinking water. They were administered four treatments, each of which lasted for one week: twice-daily placebo dentifrice, twice-daily fluoride dentifrice, twice-daily fluoride dentifrice and once-daily fluoride mouthrinse, and thrice-daily fluoride dentifrice. At the end of each treatment period, samples of unstimulated saliva and dental biofilm were collected 8 h after the last oral hygiene procedure. Fluoride concentrations in saliva and dental biofilm were analyzed using a specific electrode. The fluoride concentrations in saliva and dental biofilm 8 h after the last use of fluoride products did not differ among treatments. The results of this study suggest that treatments with home-use fluoride products have no long-term effect on fluoride concentrations in saliva and in dental biofilm of residents of an area with a fluoridated water supply.

Protocol of Toothbrushing Based on Bioavailability of Fluoride in Toothpaste: A Systematic Review

“…Furthermore brushing the teeth three times daily the Bp and Bs increased 68 % and 11 % respectively, compared with brushing twice a day. Similar results are found in the report by Souza et al (2014) where Bp increases 10.2 % when brushing with Dt three times a day versus twice a day; and Bp increases 11. 8% when brushing twice a day plus a third exposure of fluoride with fluoride mouthwash, compared with two daily brushings.…”

Fluoride and calcium concentrations in the biofilm fluid after use of fluoridated dentifrices supplemented with polyphosphate salts

“…This result is consistent with previous data showing higher F concentrations in whole biofilm samples 1 h after brushing with F dentifrices, which returned to baseline (placebo) values 12 h after the use of a conventional toothpaste [24]. Also, fluoride concentrations in saliva and dental biofilm collected 8 h after the last use of fluoride products (dentifrices and fluoride solution) did not differ among treatments (placebo, 1100 ppm F, and 1100 ppm F + fluoride solution), suggesting that F products for home-use have no long-term effect on fluoride concentrations in saliva and in dental biofilm, mainly in residents of an area with a fluoridated water supply [25,26].…”

<p>Comparison of Some Salivary Characteristics in Iraqi Children with Early Childhood Caries (ECC) and Children without Early Childhood Caries</p>

“…The average salivary fluoride in the group of children with ECC-S and without ECC was 0.033 ppm, while the group of children with ECC had a slightly higher concentration of 0.034 ppm, not being statistically significant, suggesting that this variable Saliva is also not a determining factor in the development of dental caries. Souza et al 19 in 2014, also did not find a correlation between caries and fluoride levels, however in his study fluoride concentrations were higher, 0.134 ppm in the group of subjects with high carious activity and 0.156 ppm in the group with low caries levels. These higher concentrations may be for multiple factors, such as the fluoridation of water in that region and/or the intake of fluoride-rich foods.…”