Deposition profile of antibacterial anodic silver in root canal systems of teeth.

摘要: Electrically activated silver was shown to have an antibacterial effect in vitro and vivo. In this study the of placing a anode root canal systems teeth examined establish base for treatment infected teeth. Pure wires were placed main canals extracted human (n = 26) whose roots partly submerged lactated Ringer's solution. Seventeen microamperes anodic direct current applied one group 15) 4 days. Then removed both cut into six sections demineralized Silver concentrations their bathing solutions measured with atomic absorption spectrophotometer. group, electrically (range, 1-30 micrograms/microL) exceeded levels (minimum inhibitory concentration, 0.1 micrograms/microL Ag) all sections, particularly middle lower sites root. The amount that leaked out found as be 0.4 +/- 0.2 fluid medium. This 10 100-fold higher than nonactivated controls.