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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

From: Risk-based early prevention in comparison with routine prevention of dental caries: a 7-year follow-up of a controlled clinical trial; clinical and economic aspects

Prevention group   DMF I+DMFS Sealants
Risk category at 2 yrs n Mean S.D. Mean S.D. Mean S.D.
Risk-based N = 245   0.2 0.6 2.8 4.4 2.6 2.5
   Low-risk 166 0.2 0.6 2.4 3.8 2.4 2.5
   Intermediate 52 0.2 0.7 3.1 4.7 2.8 2.2
   High-risk 27 0.4 0.8 4.7 6.4 3.4 2.9
Routine N = 202   0.4 0.9 2.9 4.0 1.6 1.8
   Low-risk 134 0.3 0.7 2.3 3.8 1.5 1.6
   Intermediate 50 0.6 0.9 4.1 3.8 1.5 1.8
   High-risk 18 0.9 1.4 4.6 4.7 2.2 2.9