Table 2.
Number of colony forming units (CFU) of Streptococcus mutans observed in the saliva samples of 6 children with dilution of 1:100 before and after the treatment with varnish containing the oil resin of Copaifera langsdorffii on concentrations 1, 5, 10 and 20%. In each concentration, comparisons between pre- and post-treatment were carried out by using the t test for paired samples.
| Concentration (%) | Pre-treatment |
Post-treatment |
Significance (P value) | ||
|---|---|---|---|---|---|
| Average | SD | Average | SD | ||
| 1 (n = 6) | 33275,00 | 15146,79 | 11443,33 | 8760,58 | 0,0026** |
| 5 (n = 6) | 46388,33 | 37815,41 | 17496,67 | 11998,57 | 0,0430* |
| 10 (n = 6) | 11398,00 | 15693,41 | 8464,00 | 11950,68 | 0,1899 |
| 20 (n = 6) | 24608,33 | 16497,90 | 13218,33 | 7675,31 | 0,0474* |