Currently, oral diseases require an interdisciplinary approach to solving the problem. In most cases, patients go to a doctor during an acute stage or exacerbation of the disease. The high prevalence and increase of inflammatory oral diseases among pregnant women is one of the most significant social problems. Inflammatory processes in the oral cavity can be a provoking factor for the inflammatory reaction of the whole body and subsequently affect the development of the fetus. During pregnancy, a number of changes occur in the oral cavity in the woman's body: the microbiological picture changes, the pathogenicity of the microflora increases, the hormonal background is rebuilt: the production of progesterone, chorionic gonadotropin and other hormones increases. All these factors can lead to changes in the dentate system: deterioration of oral hygiene, increased salivation, halitosis, the appearance of gum bleeding and a change in the pH of saliva. We presented data on the examination of pregnant women in the Tambov Region. We assessed dental status of pregnant women based on dental indices: CPITN, PMA and H.R. Muhleman’s gum bleeding index, estimates of changes in saliva pH of pregnant women.