Antibacterial effect of sand blasted, large-grit, acid-etched treated Ti-Ag alloys

作者：Kang Min Kyung; Moon Seung Kyun; Kwon Jae Sung; Kim Kwang Mahn; Kim Kyoung Nam

来源：Materials Research Bulletin, 2012, 47(10): 2952-2955.

DOI：10.1016/j.materresbull.2012.04.060

• Alloys
• Metals
• Electron microscopy
• Surface properties

The purpose of this study was to investigate the antibacterial effect of sand-blasted, large-grit, acid-etched (SLA) treated Ti-Ag alloys. Three different alloys with varying Ag contents (Ti-1Ag, Ti-2Ag, and Ti-4Ag) were SLA treated by grit blasting with 250 mu m sized alumina and acid-etching in 7% HCl + 27% H2SO4 solution at 110 degrees C for 5 min. The microporous structures were formed following SLA treatment and Ag particles were identified on Ti-2Ag and Ti-4Ag alloys. And high concentration of Ag released steadily during 7 days from the Ti-4Ag. Higher level of antibacterial effect was evident on SLA treated Ti-Ag alloys compare to commercially pure Ti (p < 0.05) in the antibacterial test using Streptococcus aureus whereas no significant difference in cell viability among the SLA treated Ti-Ag allows and commercially pure Ti was identified. Hence, it was concluded that SLA treated Ti-Ag had an antibacterial effect while being biocompatible.

• 出版日期2012-10