Table 2.
McFarland standard values specifying the number of Staphylococcus aureus bacteria during incubation with tested specimens: Modified bone cements—1.5% w/w of modifiers additive (n = 3; mean ± SD; * significantly different from control—p < 0.05).
| McFarland Index | ||||||
|---|---|---|---|---|---|---|
| Time (h) | K | BC | BC-NpAg | BC-NpCu | BC-NpAg+Cu | BC-A |
| 0 | 0.5 ± 0.01 | |||||
| 0.5 | 0.68 ± 0.01 | 0.71 ± 0.02 | 0.68 ± 0.01 | 0.70 ± 0.02 | 0.60 ± 0.01 | 0.65 ± 0.01 |
| 2 | 1.93 ± 0.03 | 1.64 ± 0.01 | 1.10 ± 0.01 | 1.95 ± 0.01 | 0.77 ± 0.02 | 1.24 ± 0.01 |
| 4 | >4 | 3.48 ± 0.02 | 1.22 ± 0.02 | × | 0.79 ± 0.02 | 1.35 ± 0.02 |
| 6 | >4 | >4 | 1.29 ± 0.01 | × | 0.80 ± 0.03 | 1.48 ± 0.02 |
| 24 | >4 | >4 | 1.33 ± 0.02 * | × | 0.91 ± 0.03 * | 1.52 ± 0.02 * |
* Statistical analysis was performed between groups and control after 24 h and the group, where the statistically significant difference occurred was marked. ×—measurement rejected due to the color of the solution.