Total daily fluoride intake (TDFI) and daily fluoride intake from toothpaste
Correlation between daily urinary fluoride excretion (DUFE) and fluoride intake · Children and adults with 24-h urinary fluoride monitoring (9 studies reporting both intake and urine; Table 2)
Daily urinary fluoride excretion was not correlated with total daily fluoride intake or with fluoride intake from toothpaste (R2 < 0.07), based on nine studies (ungraded).
1 finding from 1 review
- Fluoride Intake Through Dental Care Products: A Systematic Review. 2022 All outcomes24-h urine collection · Multiple countries (28 studies; ~43% conducted in Brazil); community/general-population settings · High-fluoride-area data from Idowu et al. [46,47] excludedR2 (coefficient of determination) <0.079 studiesGRADE not reported