Alliance for a Cavity Free Future

Alliance for a Cavity Free Future
Stop Caries NOW for a Cavity-Free Future
An Oral Health Resource

Salt Fluoridation


The addition of fluoride to table salt or household salt by salt manufacturers is called salt fluoridation. This process is carried out by the salt manufacturing companies.


In Jamaica a decline of 69% in caries rates in 15-year-olds and 87% reduction in dental caries for 6-year-olds have been reported. The Pan American Health Organization (PAHO) introduced salt fluoridation to several South American countries and concluded that caries declined by 50 percent or more in most of those countries.


Cost-benefit analysis of a salt fluoridation program by PAHO concluded that for every one US dollar spent in the program, the benefit through prevention of caries is $40. In Jamaica, fluoride in salt is reported to reduce dental caries by as high as 84% at a cost of 6 cents per person per year.


The combination of both salt and water fluoridation is not recommended. About 200-250 mg fluoride per kg of salt is reported to be equivalent to 0.5-1.2 ppm of fluoride in water.