Background. In the Russian Federation the inflammatory diseases of parodont are an actual problem representing not only medical but also a social problem. Methods. For epidemiological researches of parodontal inflammatory diseases the accounting and registration forms of stomatologic clinics were used. 943 railway workers were surveyed. The identification of the allocated cultures was done by the automatic analyzer ATB Expression (BioMerieux, France). Results. Among the patients with gingivitis women were predominant and among the patients with paradontitits and parodontosis, as well as in general - men dominated. Most often the infectious pathology of the parodont was diagnosed at the age of 41-50 years. Gingivitis was more often registered at the age of 20-30 years, and not found in men of 31-40 and 41-50 years, and paradontitits and parodontosis were diagnosed almost with identical frequency. Essential differences in frequency of etiologically significant pathogens among the patients of different age and gender were not revealed. Conclusions. Calling for the stomatologic help at later stages of infectious process in parodont leads to such diseases as paradontitits and parodontosis that are typical for aged people with no dependence on gender being the general problem of out-patient service in stomatology.