Table 3.
Median (minimum and maximum) values of antibacterial efficacy of plasma treatment on S. mutans biofilm in terms of metabolic activity.
| Groups | Time | p-value | |||
|---|---|---|---|---|---|
| Baseline | 2 min | 4 min | 6 min | ||
| Control | 1.58 (− 0.15 a 2.92) | 1.23 (− 0.18 a 3.61) | 1.15 (− 0.09 a 4.38) | 1.41 (− 0.46 a 4.28) | C |
| Plasma 30” | 1.13 (0.07 a 6.47) | 0.94 (− 0.03 a 4.69) | 1.44 (− 0.05 a 3.51) | 1.37 (− 0.24 a 5.24) | C |
| Plasma 90” | − 0.39 (− 0.72 a 0.11) | − 0.41 (− 0.78 a 0.51) | 0.19 (− 0.78 a 0.39) | − 0.02 (− 0.84 a 0.67) | A |
| Plasma 120” | − 0.38 (− 0.57 a 0.08) | − 0.36 (− 0.65 a 0.11) | − 0.35 (− 0.58a − 0.04) | 0.35 (− 0.65 a 0.26) | A |
| Plasma 150” | − 0.31 (− 0.80 a 0.43) | − 0.32 (− 0.68 a 0.31) | − 0.23 (− 0.68 a 0.11) | − 0.21 (− 0.68 a 0.55) | B |
| Argon gas | 0.87 (− 0.07 a 6.04) | 0.70 (− 0.31 a 5.85) | 0.83 (− 0.22 a 5.32) | 0.49 (− 0.22 a 3.35) | a |
| Chlorhexidine | − 0.83 (− 0.95 a − 0.54) | − 0.72 (− 0.95 a − 0.56) | − 0.66 (− 0.96 a − 0.46) | − 0.69 (− 0.94 a − 0.20) | * |
Groups having similar letters are not significantly differences (p > 0.05), *Indicates significantly differences with all the groups, aIndicates differences with P90, P120 and P150 groups.