From: Dental health of preschool children after two-years of a supervised tooth brushing program in Southern Israel
N
PP
d
m
f
dmft
participant
59
83
3.22
0.36
1.07
4.64
non-participant
67
75
3.94
0.06
0.34
4.34
significance
NS
p < 002
p < 0.02