| Medicaments | Number of bacteria CFU 10−2 |
| Calcium hydroxide | Uncountable |
| Chlorhexidine | 1.5 × 10−2 |
| Propolis | 18.5 × 10−2 |
| Propolis + Calcium hydroxide | 46 × 10−2 |
| Propolis + Chlorhexidine | >300 × 10−2 |
| Control group (without medicament) | >300 × 10−2 |