Fluoride compounds found in toothpastes and means for rinsing the mouth, should ensure the prevention of caries.
However, scientists have found that they are actually ineffective. The fact that the protective layer formed by fluoride on enamel is too thin. These data refute previous research.
A specialist in experimental physics, Franck Muller and his colleagues from the University of Saarland in Germany emphasize that dental caries remains a major global health care problems. In the US, for example, for treatment of dental caries people spend annually more than $ 50 billion.
As you know, fluoride helps make enamel resistant to fracture. However, recent studies revealed that the fluoride layer formed after brushing your teeth, is in reality a thickness of about six nanometers, and this is not enough. For effective protection, according to scientists, it is necessary 10 thousand such layers.
