[A role of unfavorable antenatal factors in the formation of teeth and in the development of dental diseases in children].

The influence of poor factors of the antenatal period on the formation of teeth and on the development of dental diseases was studied in Kazan children. The factors, such as maternal health during pregnancy, the course of the latter and labor, bad habits (smoking or passive smoking during pregnancy), maternal age, which influence tissue histogenesis, the establishment of the follicles of all primary and some permanent teeth and their mineralization in antenatality, determine dental morbidity after their eruption with probability of errors of more than p < 0.01-0.05.