[Evaluation of the clinical effect of fluoride coating combined with pit and fissure sealing or preventive resin filling on prevention of first permanent molars caries].

Purpose: To explore the clinical effect of fluoride coating combined with pit and fissure sealing or preventive resin filling on prevention of young first permanent molars caries.

Methods: Three hundred suspicious first permanent molars caries in 90 children (6-8 years old) who received oral health examination in our hospital from February 2015 to January 2016 were included as the study subject, and randomly divided into group A, B, C, D and E. Group A received pit and fissure sealing, group B received preventive resin filling, group C received 0.