The effect of different doses of octenidine hexafluorosilicate on the development of dental caries in rats

At present, ammonium hexafluorosilicate and hexafluorosilicates of organic amonium cations are actively studied as potential anticaries agents, which demonstrate certain advantages over traditional compounds of fluorine. Previously, it was shown that hexafluorosilicates with bactericidal cations of chlorhexidine, polyhexamethyleneguanidine and cetylpyridinium effectively reduce the number and depth of carious lesions of teeth in rats and at the same time significantly improve the biochemical parameters of the pulp of the teeth. The aim of the work – to study the effect of different doses of octenidine hexafluorosilicate (OHFS) on the incidence of dental caries in rats fed a cariogenic diet (CD). OHFC preparations were applied to the teeth and gums of rats in the composition of phytogels based on Na-salt of carboxymethylcellulose. In the incisor pulp, the activity of alkaline (ALP) and acidic (ACP) phosphatases, elastase, lysozyme was determined, and the mineralizing index (MI) was calculated. The number and depth of dental caries lesions were calculated and caries prophylactic efficacy (CPE) was calculated. The activity of elastase, catalase, lysozyme and urease was determined in the gums, and the degree of atrophy of the alveolar process was determined. Determination of dental caries lesions shows that CD does not increase the number of carious lesions, and after the application of gels with OHFS, their number significantly decreases. The most effective was the concentration of the OHFS gel, equal to 2 mg/ml, although the concentration of the OHFS gel 1 mg/ml showed a decrease by 33.3%. The calculated CPE is 33.3% for a gel with 1 mg/ml OHFS, 36.4% for a gel with 2 mg/ml and 24.2% for a gel with 4 mg/ml. It has been shown that in rats receiving CD, the ALP activity significantly decreases and the ACP activity significantly increases, which gives a significant decrease in MI from 43.9 to 28.9. Application of gels with OHFS returns the activity of both phosphatases to the control level and almost completely normalizes MI, and the concentration of OHFS gel of 2 mg/ml turned out to be the most effective. Application of gels with 1 mg/ml and 2 mg/ml OHFS reduced elastase activity by 6% and 12%, respectively, whereas application of a gel with 4 mg/ml OHFS did not result in a decrease in elastase activity. From the results of determining the degree of dysbiosis in the blood serum of rats, it can be seen that CD causes the development of generalized dysbiosis. Application of gels with OHFS significantly reduce the degree of dysbiosis, especially gels with OHFS concentrations of 1 and 2 mg/ml. Oral application of gels containing OHFS reduces the incidence of caries on the teeth, increases the mineralizing activity of the pulp and reduces the degree of generalized dysbiosis. The most effective concentration of the OHFS gel is 2 mg/ml, which corresponds to a dose of 2.2 mg/kg.