Table 2
Optical Density of Tea Tree Oil at Three Different Con-centrations with Streptococcus mutans
| Concentration (%) |
Optical density (mean±SD) |
| 0 |
0.125±0.002a |
| 0.5 |
0.019±0.004b |
| 1.0 |
0.017±0.004b |
| 2.0 |
0.016±0.007b |
a,bThe same letters indicate no differences between the groups (p>0.05).
