Antibacterial property of a gradient Cu-bearing titanium alloy by laser additive manufacturing

Streptococcus mutans (S. mutans) is the most common cariogenic bacteria and causes caries by forming biofilms. A novel gradient Cu-bearing titanium alloy (TC4-5Cu/TC4) was manufactured using selective laser melting (SLM) technology for dental applications, which is anticipated to inhibit the formation of biofilm. In this study, the released concentration of copper ions in both minimum inhibitory concentration (MIC) and minimum bactericidal...