Objective: To observe the caries prevention effect of the implementation of pit and fissure sealing on the first permanent molar in children. Methods: The second grade pupils of two primary schools in Xinchang Community, Shanghai were divided into a closed group with 205 pupils and a control group with 209 pupils. The pit and fissure sealing was performed on the first permanent molar which met the indications in the closed group, and the control group received no treatment. Follow-up was performed 3 years later to check the retention of the sealant and the caries. Results: A total of 1 639 first permanent molars were examined in children of the two groups, a total of 344 eligible first permanent molars in the closed group were closed. Three years later, the retention rate of pit and fissure sealant was 52.90%;the incidence of caries was 6.25% in the closed group and 11.22% in the control group. The difference between the groups was statistically significant(χ^2 =12.66, P < 0.01). Conclusion: Implementing pit and fissure sealing on the first permanent molar can effectively reduce the incidence of dental caries.
Shanghai Medical & Pharmaceutical Journal
first permanent molar
pit and fissure sealing