Aim of our study was to study the preventive and therapeutic effect of microbial products, including dry and freeze-dried live cultures of lactobacillus. The article presents the results of comparative evaluation of the dynamics of clinical data in the prevention in 164 adolescents aged 14 to 18 years, and in the treatment of chronic generalized periodontitis of mild to moderate severity in 100 adults, with the appointment of probiotic in one group. The level of the oral hygiene and the state of periodontal tissues were estimated by the standard dental indieces. It was found that probiotics used in complex of preventive and treatment measures, regardless of the technology of their creation, contribute to positive clinical dynamics, namely to improve oral hygiene and the condition of the periodontal tissues.

Aim. Investigate the need of the population for treatment of inflammatory parodontal diseases and the degree of motivation and compliance with treatment and following the dentist’s recommendations.Methods. 427 patients aged 18 to 85 were evaluated by means of the index of assessment of periodontal tissues’ state (CPITN, 1980) and the questionnaire. Patients were divided into two groups: the first group included 143 people diagnosed with parodontitis who had previously received parodontal treatment, and the second group consisted of 284 patients who were not previously aware of their periodontal status. All obtained numerical values were subjected to statistical analysis.Results. Symptoms of periodontal inflammation were identified in 84.5% of cases, in most cases moderate severity of periodontitis was diagnosed. Severity of inflammation of the periodontal tissues is similar in males and females, besides there is no significant difference in inflammation signs observed in patients older than 45 years. Despite the fact that the patients of the first group knew about their disease, their degree of motivation in oral hygiene does not differ from that of patients from the second group who have periodontitis of almost the same severity, but did not know about the disease or did not go to a dentist complaining of periodontium pathology. Despite the 100% motivation in oral hygiene of patients previously diagnosed with periodontitis only 50% of them take regular treatment and preventive measures and demonstrate compliance with treatment and prevention.Conclusion. Obtained data demonstrate the significant need for periodontal treatment along with poor compliance with prescribed treatment.