[Report of experience during 1-year at the Gondar College of Medical Sciences in Ethiopia. 2. Frequency of caries and periodontitis in Ethiopia].

On the basis of a clinical epidemiological study of 312 patients are made biostatistical investigations about prevalence and Severity of dental caries and marginal periodontitis. The situation of oral hygiene is evaluated by means of the PI of Løe and Silness and the OHI-S of Greene and Vermillion. The DMF/T-Index is used for the evaluation of the set of teeth and the GI of Løe and Silness like the PDI of Ramfjord for the evaluation of the periodontal state. It is shown that caries and marginal periodontitis are more seldom and of less severity in comparison with the situation in the population of industrialized countries. Causitive seems to be possible besides special habits the smaller consumption of sugar. With the increasing socio-economic standard a changing of the situation in the direction of industrialized countries is visible.