Table 2. Determination of MBC of cinnamon essential oil, Cajeput essential oil, their combination, and 0.2% chlorhexidine gluconate against Staphylococcus aureus, Enterococcus faecalis, and Candida albicans.
The results are shown as average values of triplicates in mg/mL (mean ± standard deviation).
The statistical test applied was the Kruskal-Wallis test.
The post hoc test applied was Bonferroni post hoc test.
aThe gold standard of 0.2% CHX was not statistically significant.
b,cSignificant differences when compared to 0.2% CHX (in the same row).
*P ≤ 0.05 was considered statistically significant.
MBC, minimum bactericidal concentration; CHX, chlorhexidine hydrochloride solution
| Test microorganisms | MBC (mg/mL) | Statistics | ||||
| 0.2% CHX | Cinnamon oil | Cajeput oil | Combination | Z-value | P-value | |
| Staphylococcus aureus | 6.51 ± 2.26a | 0.33 ± 0.14b | 5.21 ± 2.26a | 0.65 ± 0.28c | 9.482 | 0.024* |
| Enterococcus faecalis | 15.63 ± 0.02a | 0.41 ± 0.14b | 2.77 ± 1.97a | 1.38 ± 0.99c | 8.253 | 0.041* |
| Candida albicans | 10.42 ± 4.51a | 2.85 ± 2.11a | 5.86 ± 3.38a | 1.30 ± 0.56b | 6.431 | 0.092 |