Table 1 Number of DMF teeth, I+DMF surfaces, and sealants at the age of 12 years. Analysis of variance: DMF: Group effect, p < 0.001, Risk category effect, p < 0.001;I+DMFS: Group effect, not significant, Risk category effect, p < 0.001; Sealants: Group effect, p < 0.001, Risk category effect, p = 0.05

0.2

0.6

2.8

4.4

2.6

2.5

166

0.2

0.6

2.4

3.8

2.4

2.5

52

0.2

0.7

3.1

4.7

2.8

2.2

27

0.4

0.8

4.7

6.4

3.4

2.9

0.4

0.9

2.9

4.0

1.6

1.8

134

0.3

0.7

2.3

3.8

1.5

1.6

50

0.6

0.9

4.1

3.8

1.5

1.8

18

0.9

1.4

4.6

4.7

2.2

2.9