Table 1. Comparison of the mean diameter of the inhibition zone (mm, n = 15) for Streptococcus mutans and Lactobacillus acidophilus for three materials.

Restorative material	Streptococcus mutans	Lactobacillus acidophilus
Fuji IX	10.84 ± 0.22b	10.43 ± 0.12b
Ketac Molar	10.23 ± 0.15a	10.16 ± 0.11a
d-tech	15.65 ± 0.31c	15.57 ± 0.13c
p value	< 0.001	< 0.001

Different superscript letters mean that there were differences between the materials within each strain according to the analysis of variance (ANOVA) and post hoc Tukey highly significant difference (HSD) tests.