Skip to main content
. 2023 Mar 24;35(4):322–329. doi: 10.1016/j.sdentj.2023.03.007

Table 1.

Average of Inhibitory zone and standard deviation of robusta coffee bean extract on periopathogenic bacteria.

Num Group N Mean (mm) ± Standart Deviation
P.gingivalis A. actinomycetemcomitans S. viridans
1 Negative control 4 0,00 ± 0,00* 0,00 ± 0,00* 0,00 ± 0,00*
2 Concentration 50% 4 19,18 ± 0,18* 16,15+0,12* 18,15 ± 0,19*
3 Concentration 25% 4 16,59 ± 0,17 12,20 ± 0,10 14,95 ± 0,10
4 Concentration 12,5% 4 13,14 ± 0,24 8,40 ± 0,22 12,15 ± 0,25
5 Concentration 6,25% 4 0,00 ± 0,00ns 0,00 ± 0,00ns 0,00 ± 0,00ns

Description: * significant, ns non-significant.