TABLE 1.

Demographic and clinical characteristics of subjects

	No. of subjects	Mean age, years (range)	df, %	DMF, %	With dental decay, %	With caries experience, %
Conventional PCR	32	8.6 (1–12)	41.2	9.2	31.1	68.9
Severe caries	20	7.6	73.6	11.6	40	100
Healthy	12	9.3	0	0	0	0
16S rRNA pyrosequencing	16	8.2 (6–10)	34.4	2.9	31.3	56.3
Severe caries	9	8.2 (7–9)	61	5	56	100
Healthy	7	8.1 (6–10)	0.0	0.0	0	0