In the prevention and cure the dentist has a relatively new weapon, the fast clinical saliva test. During a short examination turns out, whether the patient has sufficient amount of saliva and whether its composition is appropriate. As long as the processes in the mouth are in balance, we can say that the mouth is healthy. The key element here is the saliva that is able to regain this balance with the help of its components. For example, it successfully neutralises the acidity caused by eating, but if it lacks its buffering capacity, dental caries are more frequent. It can be an important piece of information even in case of sufficient dental hygiene, for it is possible that the teeth can be protected by using protective dental creams (GC MI Paste+).