Fluoride Release (µg F/mg varnish) at (minutes) 0-10, 10-20, 20-30, 30-45, 45-60, 60-120, and 120-240 intervals. Mean ± SD. The values reflect microgram of fluoride per milligram of fluoride varnish. Values reported at 45 minutes, 1h, 2h and 4h were adjusted to reflect the release equivalent to a 10 minutes interval.