Table 1.

Colony-forming unit (CFU)/ml of the four samples after a week of incubation with Enterococcus faecalis (EF) suspension

Sample number	Total weight of dentin chips (g)	CFU/ml
1	0.007	4.2×105
2	0.007	3.8×105
3	0.007	4.4×105
4	0.007	3.2×105
Mean CFU/ml=3.9×105