Antibacterial Activity of As-Annealed TiO2Nanotubes Doped with Ag Nanoparticles against Periodontal Pathogens

[摘要] It is important to develop functional transmucosal implant surfaces that reduce the number of initially adhering bacteria and they need to be modified to improve the anti-bacterial performance. Commercially pure Ti sheets were anodized in an electrolyte containing ethylene glycol, distilled water and ammonium fluoride at room temperature to produce TiO2nanotubes. These structures were then annealed at 450°C to transform them to anatase. As-annealed TiO2nanotubes were then treated in an electrolyte containing 80.7 g/L NiSO4·7H2O, 41 g/L MgSO4·7H2O, 45 g/L H3BO3, and 1.44 g/L Ag2SO4at 20°C by the application of 9 V AC voltage for doping them with silver.As-annealed TiO2nanotubes and as-annealed Ag doped TiO2nanotubes were evaluated by SEM, FESEM, and XRD.Antibacterial activity was assessed by determining the adherence ofA. actinomycetemcomitans,T. forsythia, andC. rectusto the surface of the nanotubes. Bacterial morphology was examined using an SEM. As-annealed Ag doped TiO2nanotubes revealed intense peak of Ag. Bacterial death against the as-annealed Ag doped TiO2nanotubes were detected againstA. actinomycetemcomitans,T. forsythia, andC. rectusindicating antibacterial efficacy.

[学科分类] 物理化学和理论化学