[Efficacy of treatment of chronic destructive forms of apical periodontitis using oral decontamination antibiotic therapy].

The efficiency of preventive oral antibiotic therapy before the root channel filling was evaluated in 78 patients with granulating and granulomatous chronic periodontitis. Positive clinical changes were observed after lincomycin or rondomycin therapy (p = 0.017). The number of complaints was also less in the latter group (p > 0.05). The incidence of x-ray restoration of periapical foci of bone tissue destruction during 6 and 12 months was significantly higher (p < 0.05 and p < 0.01) after preventive treatment with lincomycin or rondomycin, characterized by potent osteotropic effects (decontamination with rondomycin 81.8%, with lincomycin 70.3% vs. 31.0% without decontamination therapy).