Table 4.
The mean and standard deviation of Streptococcus mutans acid production in the effects of different concentrations of ethanolic, , and hydroalcoholic extracts of olive leaf (pH)
| Concentrations (%) | Ethanolic extracts |
Methanolic extracts |
Hydroalcoholic extracts |
|||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Negative control | 5.43 | 0.03 | 5.43 | 0.03 | 5.54 | 0.03 |
| 3.125 | 5.81 | 0.01 | 5.38 | 0.23 | 5.77 | 0.06 |
| 6.25 | 6.23 | 0.05 | 5.40 | 0.01 | 5.93 | 0.14 |
| 12.5 | 6.66 | 0.23 | 5.87 | 0.12 | 6.35 | 0.21 |
| 25 | 7.08 | 0.03 | 6.27 | 0.25 | 7.00 | 0.00 |
| 50 | 7.17 | 0.03 | 6.90 | 0.17 | 7.07 | 0.06 |
| pH mean | 6.40 | 0.66 | 5.87 | 0.58 | 6.25 | 0.63 |
| Statistically significant | <0.001 | <0.001 | <0.001 | |||
SD: Standard deviation