Can well-water cause cavities?
It is no secret that fluoride has been shown to decrease the risk for tooth decay significantly in all individuals. It works by strengthening the teeth, thereby making it tougher for those cavity-causing critters to munch their way through the teeth. One important source for fluoride exposure is drinking water.
If your county or city provides your drinking water, you are more likely to be receiving the correct amount of fluoride. Most U.S. cities that have a municipal water supply are now mandated to monitor and adjust the amount of fluoride in the communities’ drinking water. Community water fluoridation is considered to be the single most effective public health measure to prevent tooth decay. It has been successful in the reduction of tooth decay among different populations and is the most cost-effective form of public prevention. Fluoridation is endorsed by the Centers for Disease Control and Prevention, which has listed community water fluoridation as one of 10 great public health achievements of the 20th century.
The optimal fluoride level in drinking water is 0.7 – 1.2 parts per million, an amount which has been proven beneficial in reducing tooth decay. Naturally occurring fluoride may be below or above these levels in some areas. Under the Safe Drinking Water Act, the U.S. Environmental Protection Agency requires notification by the water supplier if the fluoride level exceeds 2 parts per million. People living in areas where naturally occurring fluoride levels in drinking water exceed 2 parts per million should consider an alternative water source or home water treatments to reduce the risk of fluorosis for young children
Children drinking well water for their primary source should have their well water tested for fluoride concentration. The results should be discussed with the child’s pediatrician or dentist to determine whether or not the child should be given fluoride supplements. NEVER, I repeat, NEVER give a child any kind of fluoride supplement pill or vitamin without having your well water tested and consulting your physician/dentist. Too much fluoride is dangerous and can have devastating effects on the appearance of your child’s teeth as discussed above.
However, correct systemic fluoride amounts (taken in through drinking water) are very beneficial. Because I live in an area of suburban and rural populations, I have been exposed to patients both with and without well-water as their primary drinking water supply. The difference is astounding. In fact, it is so obvious, that an individual can usually be identified as a well-water patient just during an exam!
