Биохимические механизмы кариеспрофилактического действия гексафторсиликатов

Abstract

«Ониевые» гексафторсиликаты (ГФС) обладают более высокой кариеспрофилактической эффективностью по сравнению с фторидом натрия. Наиболее активным оказался цетилпиридиниевый гексафторсиликат в дозе 15 мг/кг при использовании в виде оральных аппликаций геля. Механизм действия ГФС состоит в активации щелочной фосфатазы и лизоцима пульпы зубов.

Aim: To determine the biochemical mechanisms of the anticariotic action of hexafluorosilicates and select the most active of them. Methods: In this work there were used 5 "onium" hexafluorosilicates (containing NH3, chlorhexidine, polyhexamethyleneguanidine, cetylpyridinium, pyridoxine) and sodium fluoride. Those were used in the form of gels and applied on teeth and gums in the dose containing 1.36 mg / kg of fluoride per day. The caries prophylaxiseffectiveness was evaluated by the number of dental caries in rats treated with the Stefan‘s cariogenic diet for 35 days. Alkaline (AlP) and acid (AcP) phosphatases‘ activities among with lysozyme activity were determined in the dental pulp. The index of mineralized pulp was calculated as the ratio AlP / AcP. Results: All tested hexafluorosilicates were more effective than sodium fluoride. The most efficient was cetylpyridinium hexafluorosilicate in the dose 15 mg / kg. The biochemical mechanism of the caries prophylaxis action of hexafluorosilicates is the activation of alkaline phosphatase AlP and pulp‘s lysozyme.