TAXONOMIC CONTENT AND MICROECOLOGICAL PARAMETERS OF MICROIBOTA FROM THE DENTAL ROOT CANAL CONTENT IN CASE OF CHRONIC GRANULATING PERIODONTITIS

Abstract

The study deals with the detection of taxonomic and microecological parameters of the “macroorganism-microbiom” ecosystem of microbiota from the dental root canal content of 21 patients suffering from chronic granulating periodontitis. Objective – to determine taxonomic content and microecological parameters of microbiota from the dental root canal content in case of chronic granulating periodontitis of the upper and lower jaws. Materials and methods. The content of dental canals of 21 patients suffering from chronic granulating periodontitis was examined microbiologically. Taxon domination was determined on the basis of values of constancy index, frequency index, Margalef species richness index and Whittacker diversity index, and the rate of taxon domination – by the indices of Simpson diversity and Berger-Parker dominance. Results. Under conditions of chronic granulating periodontitis S. salivarius and yeast cells, autochtonous for the oral cavity, are found in the content of the dental root canals in 23,81 % and 19,05 % of the examined patients respectively. At the same time, bacteria from the genera Lactobacillus, Bacteroides and Prevotella are found only in 9,52 % of patients suffering from chronic granulating periodontitis. According to constancy index, frequency index, Margalef species richness index, Whittacker diversity index, the indices of Simpson diversity and Berger-Parker dominance the main biotope microbiota from the content of the dental root canals in patients with chronic granulating periodontitis is presented by opportunistic S. anginosus, and additional microflora – by opportunistic S. haemolyticus, Р. aeruginosa. At the same time S. sanguis, S. pyogenes, S. mitis, S. faecalis, S. aureus, S. epidermidis, Е. сoli, N. lactamica and С. albicans are iften found in the biotope.Conclusions. Under conditions of chronic granulating periodontitis contamination of the content of the dental root canals by opportunistic bacteria was found to be the following: S. anginosus (in 52,38 % of patients), S. haemolyticus (23,81 %), S. mitis (19,05 %), Е. сoli (19,05 %), and S. pyogenes, S. faecalis, S. aureus, K. pneumonia, Р. aeruginosa, С. albicans (from 23,81 % to 9,52 % of patients).