High concentrated Ag-DLC-Ti | Ti (untreated) | DLC-Ti | Ag-DLC-Ti (Ag:PVP 1:2) |
---|---|---|---|
S. epidermidis | |||
Surface adhesion | |||
CFU ± SD | 2.1 × 105 ± 7.6 × 104 | 3.3 × 105 ± 2.4 × 105 | 8.1 × 100 ± 1.9 × 101 |
Changes compared to Ti (log-levels/%)a,b | +0.2/+57 % | −4.4/−99.9 % | |
p values | 0.149 | <0.05 | |
Growth in surrounding medium | |||
CFU/ml ± SD | 4.5 × 105 ± 2.8 × 105 | 1.0 × 106 ± 4.0 × 105 | 3.4 × 102 ± 1.1 × 103 |
Changes compared to Ti (log-levels/%)a,b | +0.3/+122.2 % | −2.8/−99.9 % | |
p values | <0.05 | <0.05 | |
S. aureus | |||
Surface adhesion | |||
CFU ± SD | 7.3 × 106 ± 3.1 × 106 | 7.8 × 106 ± 2.4 × 106 | 1.7 × 104 ± 3.1 × 104 |
Changes compared to Ti (log-levels/%)a,b | +0.03/+6.8 % | −2.6/−99.9 % | |
p values | 0.428 | <0.05 | |
Growth in surrounding medium | |||
CFU/ml ± SD | 1.1 × 108 ± 4.1 × 107 | 8.4 × 107 ± 6.1 × 107 | 3.6 × 105 ± 5.4 × 105 |
Changes compared to Ti (log-levels/%)a,b | −0.1/−23.6 % | −2.5/−95.9 % | |
p values | 0.213 | <0.05 | |
P. aeruginosa | |||
Surface adhesion | |||
CFU ± SD | 1.6 × 106 ± 7.7 × 105 | 1.3 × 106 ± 5.7 × 105 | 3.8 × 100 ± 1.5 × 101 |
Changes compared to Ti (log-levels/%)a,b | −0.09/−18.6 % | −5.6/−99.9 % | |
p values | 0.533 | <0.05 | |
Growth in surrounding medium | |||
CFU/ml ± SD | 2.4 × 108 ± 3.8 × 107 | 2.1 × 108 ± 2.7 × 107 | 7.4 × 102 ± 1.6 × 103 |
Changes compared to Ti (log-levels/%)a,b | −0.06/−12.5 % | −5.5/−99.9 % | |
p values | 0.161 | <0.05 |
Low concentrated Ag-DLC-Ti | Ti (untreated) | DLC-Ti | Ag-DLC-Ti | |
---|---|---|---|---|
Ag:PVP 1:10 | Ag:PVP 1:20 | |||
S. aureus | ||||
Surface adhesion | ||||
CFU ± SD | 6.8 × 105 ± 7.6 × 104 | 9.7 × 105 ± 2.4 × 104 | 5.9 × 103 ± 4.9 × 103 | 1.3 × 104 ± 5.2 × 103 |
Changes compared to Ti (log-levels/%)a,b | +0.2/+57 % | −1.1/−91.8 % | −0.7/−81.9 % | |
p values | 0.149 | <0.05 | <0.05 | |
Growth in surrounding medium | ||||
CFU/ml ± SD | 3.1 × 105 ± 1.8 × 105 | 5.5 × 105 ± 2.0 × 105 | 5.2 × 104 ± 3.8 × 104 | 1.4 × 105 ± 5.4 × 104 |
Changes compared to Ti (log-levels/%)a,b | +0.3/+122.2 % | −0.8/−98.3 % | −0.3/−54.8 % | |
p values | <0.05 | <0.05 | <0.05 |