Quality and effect of pit and fissure sealants applied to the first permanent molar among children in Pudong New Area

Objective To evaluate the quality and effect of pit and fissure sealants applied to the first permanent molar among children in Pudong New Area,and to provide basis for popularizing pit and fissure sealants applied to the first pemanent mular among children.Methods Totally 605 children who had received pit and fissure sealant in the first permanent molar in Pudong New Area during 2012-2014,and 176 children who had not received pit and fissure sealant in 2012,were randomly selected.Retention of the pit and fissure sealants and prevalence of first permanent molar caries was evaluated.Results The retention rate of pit and fissure sealant among children of grade 1-3 was 80.26%,70.83% and 60.43%,respectively;The difference was statis tically significant(x2 =16.46,P<0.01).Prevalence of first permanent molar caries was significantly lower in intervention group than that of the control group(4.10% vs 7.20%,x2 =6.41,P<0.05).Conclusion As one of the free public health services,the pit and fissure sealants among children can effectively prevent the occurrence of the first permanent molar caries.