[Caries recurrence: descriptive, analytic and prospective clinimetric study]

The purpose of the work is to study primary and recurrent caries through an epidemiological inquiry on the bucco-dental state of dental students at the University of Bordeaux II from 1986 to 1988. The first part describes the sample with mean and standard deviation; then histograms are constructed for each parameter with mean and median. A second, analytical part allows the study of the influence of time and research of risk factors and associated ones of primary and secondary caries, and evidence of a linear relationship between dental caries and quantitative factors. The last, prospective part leads to quantification of predictive value of risk factors with the calculation of sensitivity, specitivity and conditional probability. Results statistically show that risk factors predispose to dental caries and their recurrence for alpha = 10%. They, consequently, confirm particularity of the population about hygiene, treatment motivation and show trends to sugared food consumption, hygiene, salivary ph, yet setting the problem of sample representativity.