The phrase "enough fluoride" means having the right amount of fluoride. It refers to reaching a proper level of fluoride in something, like water or toothpaste, to get the desired benefits without causing harm. Full definition
If your child is not getting enough fluoride internally through water (especially if the fluoride level is deficient or if your child drinks bottled water without fluoride), then your pediatric dentist may prescribe fluoride supplements. (aapd.org)
Check with your child's dentist to make sure your child is getting enough fluoride for decay protection. (articles.chicagotribune.com)
Dramatic reductions in tooth decay in the past 30 years is attributed to fluoridation of the water supply, and parents and health professionals should continue to ensure that kids receive enough fluoride to prevent cavities. (kidshealth.org)