[In vitro studies on the acidifying effect of liquid baby food on dental plaque as compared with breast and cow's milk]. / Saurebildung in Zahnplaques durch Sauglings-Flaschennahrung im Vergleich zu Mutter- und Kuhmilch.

Early caries of the first dentition is generally caused by the misuse of liquid baby food. It was the aim of this study to compare the cariogenic potential of commercial baby foods with that of breast and cow's milk. The cariogenicity was assessed by measuring the decrease in the pH of human plaque material. For this purpose, 140 plaque pH curve graphs were obtained with the aid of the earlier described oral cavity simulator. The acid production observed with the commercial baby foods examined was highly significantly greater than with breast or cow's milk. However, there was no statistically secured difference between the commercial products with different lactose contents. Cow's milk resulted in a lesser decrease in plaque pH than breast milk.

Fluoride uptake in plaque-covered enamel after treatment with the fluoride lacquer Duraphat.

The amount of alkali-soluble and alkali-insoluble fluoride was determined in human enamel after one- and six-hour treatments with Duraphat. The application was carried out on: (1) slightly demineralized enamel covered with artificial plaque, (2) cleaned, slightly demineralized enamel, and (3) sound enamel without pre-treatment. After a single Duraphat treatment lasting six hours, fluoride uptake was higher than after Duraphat treatment for just one hour in all experimental groups. More fluoride was acquired in both slightly demineralized, plaque-covered and slightly demineralized, cleaned enamel than in sound enamel. Plaque significantly hampered the formation of alkali-soluble fluoride precipitation on demineralized enamel, but its influence on the amount of fluoride taken up by the enamel was minor.

[Caries preventive effect of fluoride lacquer after several year's use in children]. / Kariesprophylaktische Wirkung von Fluorlack nach mehrjähriger Anwendung in der Jugendzahnpflege.

The course and result of a study in caries prophylaxis with fluoride varnish (Duraphat) is reported which was carried out under the auspices of the youth health organisation of the Land Hessen on pupils of the districts of Hanau Stadt and Land. During the course of 3 years the preparation was applied 5 or 6 times by a quick touch method. It resulted in significant marked decrease in the spread of caries as compared with control pupils.