The aim of our work was to find out to what extent atrophy of the alveolus, transparence of the root dentin, number of missing teeth, abrasion and the mineral content may be indicators of the age of an unknown person. In all these factors we found statistically significant dependence on age (P less than 0.05), with the exception of the sodium and magnesium content. The estimate of age can be made with relatively good reliability according to the atrophy of the alveolus, transparence of the dentin, abrasion and the number of missing teeth. The best results are achieved when a summary estimate of age is made.