Both the Canadian Dental Association (CDA) and the American Dental Association (ADA) support the use of fluorides in dentistry as a safe and effective preventative measure against dental cavities. Historically, fluoride as a decay preventative has been extensively researched for well over 50 years, and the research has been consistent in proving its safety and efficacy.
Humans ingest fluoride on a daily basis due to the fact that fluorides are found naturally in food and water and as an additive in public drinking water, toothpastes, and in oral prescriptions and rinses. So dentists must assess and account for these varied sources before considering any particular means of fluoride delivery to any individual, particularly children under the age of six, for whom over exposure can result in a condition of the teeth known as fluorosis.
Dental fluorosis is a change in the appearance of teeth and is caused when higher than optimal amounts of fluoride are ingested in early childhood while tooth enamel is forming. As long as the total daily intake of fluoride is maintained below specified levels, fluoride is a very important preventative measure in maintaining dental health of North Americans.
Both the CDA and ADA recognize the need to monitor the scientific literature with respect to levels of exposure to fluoride and general health to ensure the continued safe and effective use of fluorides in dentistry.