Table 1. Antibacterial activity of platelet concentrates against bacteria isolated from oral cavity.
| MIC (mode) | |||
| Activated | Non activated | ||
| E. faecalis | P-PRP | 1∶8 | no effect |
| PPP | 1∶8 | no effect | |
| Platelets alone | no effect | no effect | |
| 2-fold concentrated P-PRP | 1∶16 | no effect | |
| 4-fold concentrated P-PRP | 1∶16 | no effect | |
| S. agalactiae | P-PRP | 1∶16 | no effect |
| PPP | 1∶4 | no effect | |
| Platelets alone | no effect | no effect | |
| 2-fold concentrated P-PRP | 1∶16 | no effect | |
| 4-fold concentrated P-PRP | 1∶16 | no effect | |
| S. oralis | P-PRP | 1∶16 | no effect |
| PPP | 1∶4 | no effect | |
| Platelets alone | no effect | no effect | |
| 2-fold concentrated P-PRP | 1∶16 | no effect | |
| 4-fold concentrated P-PRP | 1∶16 | no effect | |
| S. aureus | P-PRP | 1∶8 | no effect |
| PPP | 1∶8 | no effect | |
| Platelets alone | no effect | no effect | |
| 2-fold concentrated P-PRP | 1∶16 | no effect | |
| 4-fold concentrated P-PRP | 1∶16 | no effect | |
MIC values are expressed as dilutions from the initial concentration; in activated samples, CaCl2 was added at a final concentration of 4.5 mM. Data are represented as mode obtained from 10 strains of each bacteria.