Table 1 Mean (SD) caries prevalence at baseline and mean (SD) caries prevalence and increment after 3 years in the CP (n = 615) and FFS (n = 310) groups

CP - baseline

2.74 (2.70)

3.64 (4.16)

0.70 (1.59)

CP - after 3 years

3.23 (3.05)

4.44 (4.85)

0.98 (2.00)

CP - increment

0.48 (0.90)

0.77 (1.53)

0.29 (0.74)

FFS – baseline

3.75 (3.55)

5.39 (6.05)

1.41 (2.65)

FFS - after 3 years

4.55 (4.05)

6.96 (7.54)

2.19 (3.57)

FFS - increment

0.80 (1.33)

1.57 (2.69)

0.78 (1.54)