Despite the improvement of methods of clinical and laboratory diagnostics of periodontal diseases, the actual problem of periodontology remains the question of the use and choice of antimicrobial chemotherapy.
THE AIM OF THE STUDY
Was to establish the prevalence of strains of microorganisms resistant to antibacterial drugs isolated from subgingival dental plaques of periodontitis patients in the acute and remission stages.
MATERIALS AND METHODS
For the study, patients (90 people) were selected who were diagnosed with chronic periodontitis (K05.3) as a result of clinical examination and subsequent treatment on the basis of the Clinical Center of Dentistry of the Moscow State Medical University named after A.I. Evdokimov of the Ministry of Health of the Russian Federation and in the dental departments of the Moscow Medical Institution (№23, 29). The research methods included culture (disco-diffusion method) and molecular biological technologies (PCR), which allows to identify resistant strains of bacteria isolated from subgingival biofilm.
RESULTS
Based on the inclusion/exclusion criteria, 3 comparison groups were formed: 1 — chronic periodontitis in the acute phase (they applied for the main dental disease); 2 — chronic periodontitis in the remission phase (they applied for dental implantation); 3 — practically healthy with intact periodontitis (they applied for therapeutic and preventive measures). Analysis of the frequency of detection of R-genes in general showed that the markers ermB and Mef, Van A, B (40—50%), as well as Bla DHA were most often detected in representatives of the microbiota in patients with chronic periodontitis in the acute phase. Detection of CTX-M, Tet M and INT was at an average level (approximately 1/3 of the strains). The minimum level of detection of genetic markers of resistance was noted for the markers Mes A and Tet Q (17.4%). A similar level was in the remission phase. A lower level was noted in patients with intact periodontal disease.
CONCLUSION
The results obtained allow us to justify the return to treatment regimens using doxycycline, as one of the most adequate domestic tetracycline drugs.