According to the results of endodontic treatment of chronic forms of odontotis and periodontitis the rate of complications continues to be high - from 32% to 50% that os related to characteristics of microbial bio-film. The studies of this object in root canals and methods of eradication of bio-films are at their initial stage. The purpose of study is to provide a laboratory substantiation and evaluation of efficacy of complex effect of ultrasound processing and photo-activating disinfection of root of tooth in case of chronic forms of odontotis and periodontitis and also evaluation of endodontic treatment using scanning electronic microscopy. The micro-flora of root canals was examined using bacteriological method (4 bacterial and 2 fungous clinical isolates). The effect of ultrasound processing in complex with the system, photo-activating disinfection on micro-flora of root canal was evaluated using a bio-reactor. The analysis of bio-films of system of root canals of tooth in patients with chronic forms of odontotis (52 patients) and periodontitis (16 patients) are implemented using scanning electronic microscopy. The established availability of abundant microbial bio-film in orifices of dentinal tubules and obturation of dentinal tubules in particular cases. The features of formation of curves of growth of population of bacteria of oral micro-flora (Porphyromonas gingivalis; Fusobacterium nucleatum; Streptococcus sanguinis; Streptococcus mutans; Candida albicans; Candida krusei) as a result of complex effect of photo-dynamic activation and ultrasound as compared with control without such. The complex effect inhibits growth of microbial populations of oral bacteria and fungi species Candida.
Keywords: anti-microbial activity in vitro; bio-reactor; endodontic treatment; microbial bio-film; photo-dynamic therapy; root canals; scanning electronic microscopy; ultrasound irrigation.