Our local water had a natural calcium fluoride level of about 0.6 ppm (parts per million), so I’d sift a minute amount of sodium fluoride into a test tube until I had a dosage in the acceptable ...

The study’s findings suggest that current levels of fluoride exposure in the U.S. can lead to reductions in kidney and liver function in at least some teens.

The study explores the effectiveness of sodium fluoride varnishes with added calcium and phosphate versus conventional varnishes in reducing harmful bacteria in preschool children's mouths.