[Disease of the first permanent molar in Cuban children. An epidemiological problem]

The condition of first permanent molars in a cohort of children born in Cuba, during the week comprised from March the 1st. to 7, 1973, is presented now when they are 11 years old. Maxillary teeth presented a better conservation level than mandibular teeth. Non valuable differences were found in the condition of teeth of one or another hemiarch. It was found that 80.9% of the children had one or more molars affected by caries.