[Epidemiological survey of various odonto- and parodontopathies among adolescents aged 16-20 years living in Geneva: first results].

UNLABELLED: The present paper reports some initial numerical results referring to an epidemiological study of the main dental and periodontal diseases prevalent in late adolescence. The study itself is based on a random sample survey covering the Geneva adolescent population, ages 16 to 20, and takin in 1970-1972. SAMPLE SIZE: 1392, i.e. 13% of the population. The first part depicts the overall dental health status of the mentioned sample in terms of DMF teeth counts (total recording) as depending on age groups (16-17, 17-18, 18-19 and 19-20 years), occupation (students, apprentices, and young labourers) and sex (boys, girls). The second part is devoted more specifically to the lasting effects ascribable to fluorine prophylaxis: variations of the DMF tooth count, as a function of age, for adolescents protected by fluoride intake in comparison with adolescents not so protected; estimated effect, due to fluoridation, on severity of carious lesions, again in relation with age. It is concluded that regular intake of fluoride tablets decreases overall caries frequency and slows down development of more severe forms.