Table 3.

S mutans distribution in ECC children

S mutans	N	%	Mean dmft ± SD	T test
S mutans class
Class 0	3	2%	3 ± 0
Class 1	8	5%	5.4 ± 2.0	P < 0.001
Class 2	51	34%	9.1 ± 3.0
Class 3	88	59%	12.8 ± 2.5
S mutans values in CFU/mL saliva
< 105 (0 and 1)	11	7%	4.7 ± 1.1	T = 5.5
≥ 105 (2 and 3)	139	93%	11.5 ± 3.2	P < 0.001
Total	150	100%	11 ± 3.6