From: A longitudinal study of early childhood caries incidence in Wenzhou preschool children
Examination time
N
Age
ECC
Prevalence (%)
dmft
dmfs
2011
445
3.6
266
59.8
2.9
4.9
2012
584
4.6
419
71.8
4.2
9.4
2013
560
5.6
428
76.4
11.5