XXXX -impregnated enamel and dentin: duration of antimicrobial capacity.

@entity2930 @entity3403 @entity5385 @entity885 @entity515 @entity5828 @entity803 @entity73104
The present study was done in order to examine the durability of the @entity803 -induced antimicrobial capacity, and also to assess the reproducibility of the bacterial growth-inhibitory assay used. Standardized enamel and dentin specimens were impregnated in aqueous solutions of @entity803 @entity5828 , @entity5385 @entity5828 or @entity3403 @entity5828 , rinsed in water, and stored dry for 200 days. Another series of specimens was impregnated in solutions of @entity73104 and then rinsed in tap water for varying periods up to 35 days. In addition, drug-impregnated specimens were used for reproducibility tests without storage or prolonged rinsing. Impregnated specimens were tested for antimicrobial capacity on agar plates seeded with @entity885 . After 24 h aerobic incubation in 10% @entity515 atmosphere, the plates were inspected and the diameter of the bacterial growth inhibition zones measured. The drug-impregnated enamel and dentin specimens consistently demonstrated growth-inhibitory capacity. The results of the reproducibility tests showed moderate intrasample and day-to-day variation. Two hundred days of dry storage or 35 days soaking in water reduced, but did not eliminate, the bacterial growth-inhibitory capacity of the impregnated dental specimens. The results show that a short-term exposure of dental hard tissues to @entity2930 may result in a long-lasting antibacterial capacity.
