To compare clinical effects of children’s dental caries prevention with enameloplasty sealant technique (EST) and traditional fissure sealant technique.

50 children with healthy teeth were selected randomly ,from the age of 6 to 8.5 years old and to tally 82 pairs of first molars were included (different sides of the same jaw was considered as a pair). In a self-control study, the right side was treated through enameloplasty sealant technique (group A), the left side was cured with traditional fissure sealant technique (group B). According to follow-up visit after 1 year, 2 years and 3 years, the results of two sealant techniques were evaluated.

The incidence of group A was 2.5%, 3.9%, 5.7% from 1-3 years, whereas the incidence of group B was 2.5%, 10.4% and 15.7%. No significant statistic difference was shown in the first year. However significant statistic difference was illustrated in the second and third year (P ＜ 0.05).

For preventing dental caries in children, enameloplasty sealant technique showed a better long-term clinical effect.