The analysis of prehospital factors influencing the severity of the course of odontogenic purulent- inflammatory diseases and its outcome was carried out. The total number of patients during the study period was 1305 patients (2018-675, 2019-630 patients). The most common cause of the development of pyoinflammatory diseases is the lower molars. A detailed study showed that in 5 5 % of cases the tooth was removed during surgery, which indicates a low level of therapeutic and surgical debridement among the population. In patients with acute toothache, from the first day of illness, pathological changes are observed in the tissues surrounding the tooth, underestimation of this fact can lead to the development of severe purulent-inflammatory complications.