Effect of Rinsing with Mouthwashes after Brushing with a Fluoridated Toothpaste on Salivary Fluoride Concentration

Abstract

The aim of the study was to determine whether rinsing with a mouthwash after brushing with a fluoridated toothpaste affected oral fluoride (F) retention and clearance compared with an oral hygiene regime without mouthwash. In this supervised, single-blind study, 3 regimes were compared: (A) brushing for 1 min with 1 g of 1,450 μg F/g NaF toothpaste followed by rinsing for 5 s with 10 ml water; (B) as A but followed by rinsing for 30 s with 20 ml of 100 mg F/l NaF mouthwash, and (C) as B but rinsing for 30 s with a non-fluoridated mouthwash. Twenty-three adults applied each treatment once in a randomised order, separated by 1-week washout periods, and used a non-fluoridated toothpaste at home prior to and during the study. Whole saliva samples (2 ml), collected before each treatment commenced and 10, 20, 30, 60, 90 and 120 min afterwards, were subsequently analysed for fluoride by ion-specific electrode. The mean (SD) back-transformed log (area under salivary F clearance curve) values were: A = 2.36 (+3.37, –1.39), B = 2.54 (+2.72, –1.31) and C = 1.19 (+1.10, –0.57) mmol F/l × min, respectively. The values for regimes A and B were statistically significantly greater than that for regime C (p < 0.001; paired t test). These findings suggest that use of a non-F mouthwash after toothbrushing with a F toothpaste may reduce the anticaries protection provided by toothbrushing with a F toothpaste alone. The use of a mouthwash with at least 100 mg F/l should minimise this risk.

Combination of high-fluoride toothpaste and no post-brushing water rinsing on enamel demineralization using anin-situcaries model with orthodontic bands

“…There were, however, large SD values, which is in accordance with other studies [16,25]. This variation could be due to individual behaviour factors, for example the amount of toothpaste used, amount of rinsing water, number of rinsing sessions or motor activity by the lips, tongue and cheeks.…”

Total daily fluoride intake and fractional urinary fluoride excretion in 4‐ to 6‐year‐old children living in a fluoridated area: weekly variation?

“…The F concentration of each expectorated saliva/toothpaste sample as well as each toothpaste collected was also measured directly using a F-ISE, based on the procedure of Duckworth et al 20 . Food samples were analysed for F concentration after overnight hexamethyldisiloxane-facilitated diffusion using a F-ISE.…”

Effective Use of Self-care Fluoride Administration in Asia

“…The use of a fluoride mouthrinse at concentrations of 0.05% NaF or above after brushing with fluoride toothpaste may also be advantageous for individuals who normally rinse with water after brushing, based on oral fluoride retention studies (Zero et al, 1988;Duckworth et al, 2009;Mystikos et al, 2011). Assisted/Supervised Rinsing up to Age 8 yrs -Parent/ caregiver should control the amount of mouthrinse dispensed and the length of the rinsing time A Cochrane review (Marinho et al, 2003c) has shown that supervising a child's use of self-administered fluoride (toothpaste or mouthrinse) leads to greater benefits.…”