According to stomatologists in the last few years caries of primary teeth has become a problem of every second or third child. That?s why early diagnosis and treatment of this dental disease can prevent more serious problems. Pedodontists in Iowa use ozone therapy for treatment of primary caries. It is the newest way of treatment of the milk teeth. Scientists have found that ozone adversely affects the bacteria and destroy the results of their activity, which usually lead to the development of caries. Thus, ozone can completely destroy bacteria on the tooth surface, and in fissures. The child will not feel any discomfort or pain during this procedure.