Prediction of dental caries development in 1-year-old children.

Dietary habits, oral hygiene, fluoride exposure and occurrence of mutans streptococci were studied in 1-year-old children (n = 786) as well as the socio-economic and immigrant background of their parents. The purpose was to evaluate the predictive ability of variables studied in 1-year-old children that could be used to identify children at risk for early caries development. In a multivariate logistic regression analysis, the variables significantly associated with caries at 3.5 years of age were immigrant background (p < 0.001), mother's education (p < 0.001), consumption of sugar-containing beverages (p < 0.001), mutans streptococci (p < 0.05) and candy (p < 0.05). The probability of caries development was 87% when all the variables associated with caries were present at 1 year of age. The relative risk (odds ratio) of those children to develop manifest caries at 3.5 years of age was estimated to be 32 times higher than in the children where corresponding risk factors were not present. The results indicate that prediction at 1 year of age, built on risk factors associated with dental caries, can provide an indication of possible preventive interventions.