Table 1.

Comparison of zone of inhibition in groups I and II for S. mutans and F. nucleatum.

Microorganism	Disc Type		Zone of Inhibition (mm)		Z Value	p Value ª
			Median	Interquartile Range
S. mutans	Group I		11.0	11.0–12.0	4.108	0.001 *
	Group II		0.0	0.0–0.0
F. nucleatum		Group I	0.0	0.0–0.0	-	-
		Group II	0.0	0.0–0.0

ª Mann-Whitney U test. * p value < 0.05 was considered statistically significant.