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Aim. To study the immunostimulating effect of glucosaminyl muramyl dipeptide in the treatment of chronic catarrhal gingivitis in patients undergoing orthodontic treatment using fixed appliances. Methods. The data of clinical and laboratory examination of the oral health status in 54 patients aged 14-24 years with inflammatory periodontal diseases, undergoing orthodontic treatment using fixed appliances were analyzed. The first group included 26 patients in whom glucosaminyl muramyl dipeptide (1 mg sublingual tablets daily for 10 days) was additionally administered. The second group included 28 patients receiving standard treatment. The treatment efficacy estimation was based on subjective assessment, clinical, microbiological and immunological examinations. Results. After 6 weeks of treatment, there was a statistically significant reduction of simplified oral hygiene index (OHI-s) to 0.85±0.03 in patients of the first group, compared to 1.64±0,061 before treatment. Periodontal index (PI) and PMA index values were 0, reflecting good level of hygiene and no inflammation in periodontal tissues. In the second group, the OHI-s was 1.5±0.06, PI 0.71±0.04 and PMA 18±1.046%, reflecting mild gingivitis after the 6 weeks of treatment. Bacteriology showed that the number of colonies in the first group was reduced by 1-2 orders of magnitude on average after 6 weeks of treatment. Patients of the second group showed a significant (p 0.05) increase in the number of bacterial colonies potentially causing the periodontal inflammation. The level of secretory IgA after 6 weeks of combined treatment in the first patients group was 249.5±39.1 mg/ml, whereas in the second patients group it was 182.2±14.9 mg/ml, indicating the immunostimulating activity of the complex treatment administered in patients of the first group. Conclusion. This study shows the effectiveness of glucosaminyl muramyl dipeptide as immunostumulating drug in combined treatment of chronic catarrhal gingivitis in patients with dental braces.

Relevance. The relevance of the problem is in the high prevalence of the herpes simplex virus. According to WHO, nearly 90% of the population are carriers. Relapses can occur several times a year, which leads to disability and impairs the quality of life. Currently, there are a large number of drugs for general and local treatment. However, they are toxic and can cause allergic reactions. In recent years, a large number of studies have been devoted to the use of lasers in the treatment of dental diseases. Therefore, the question of the use of a laser in the treatment of herpetic lesions of the oral cavity remains relevant.Purpose. The research purpose was to determine the effectiveness of the use of a diode laser in the treatment of herpetic lesions of the lips.Materials and methods. We conducted a comparative assessment of the effectiveness of the use of a diode laser in monotherapy of herpetic lip lesions in 18 patients. The comparison group consisted of 18 patients, in the local treatment of which antiviral ointments were used.Results. The results of the study showed that the use of a diode laser can reduce treatment time, accelerate the epithelization of foci.Conclusion. The results of our study allow us to recommend the use of a diode laser in the complex treatment of herpetic lesions of the oral cavity.

Relevance. Risk factors of local importance plays a crucial role in the development of inflammatory periodontal diseases, but the profile of representation and the role of origin microbial markers continues to be refined, what explains the increasing interest by the metagenomic studies. Purpose. To compare the genomic composition of the microbiota of the periodontal sulcus and periodontal pocket by healthy patients with inflammatory periodontal diseases living on the territory of Kazan, the Republic of Tatarstan. Materials and methods. The study included 25 young people (11 boys, 14 girls) aged 18-19 years, with inflammatory periodontal diseases (chronic generalized catarrhal gingivitis (12 people), chronic generalized periodontitis of mild severity (13 people)). The control group consisted of 11 donors without inflammatory periodontal disease.Results. In the present study structures of microbial communities of periodontal spaces has been analyzed with using the sequencing of fragments of bacterial 16s rRNA genes (regions V3 and V4). Results of the analysis allowed to get a real idea of its composition and to determine both known and previously undefined uncultivated phylotypes. Conclusions. It was shown that in the group of the patients with inflammatory periodontal diseases there were identified 183 phylotypes at the level of genus (Mogibacteriacea, TM7 3, Rs–045, Dethiosulfovibrionaceae) relating to 17 phyls (phylum), that is a synonym of type in taxonomy (taxon between Kingdom and class). By the patients with chronic generalized periodontitis of mild severity, it was not possible to reliably isolate the phylotypes present in increased amounts in relation to chronic catarrhal gingivitis; in relation to control – there was a statistically significant increase in the proportion of families Porphyromonadaceae, Peptostreptococcaceae and the proportion of genera Dialister, Filifactor, Parvimonas, Tannerella, Treponema.

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