Table 1.

Fluoride contents (ppm) of fluoridated tap water and some typical oral health products.

Source/product	[Fluoride] (ppm)
Water fluoridation	1
Fluoridated toothpaste	1,000–1,500
5% (w/v) sodium fluoride varnish	22,600
38% (w/v) silver diamine fluoride	44,800