Usually, we think that any milk is only very useful product. It strengthens our health and provides us with many important vitamins, namely: A, H, C, E, B1, B2, B6, D and PP. Moreover, there are many chemical elements (about 50) into the milk as well (on the whole they are Fe, K, Ca, S, P, Cu, Cl, Mg). Natural milk helps us to diminish an acidity into the stomach, to eliminate the heartburn, to conceal the thirst, to reinforce our joints, teeth, it helps if we catch a cold and have an ache in a throat (when a man drinks a warm milk sometimes with a honey) and so on. But in this paper there is one negative factor connected with the destruction for the teeth from the milk or from the milk products. That’s why the effective way to protect the tooth-enamel against the aggressive influence from the milk will be represented as the main aim of this article. Conclusion includes the recommendations connected with the ways how to keep our teeth for a long time.