关键词: 窝沟封闭, 六龄齿, 儿童

Abstract: Objective To analyze the pit and fissure selant in recent years of Qingdao city,and to provide some interventions to protect the health of the first molars. Method In 2013-2015,the examination of the first molars of students (7~9 years old)in five schools was taken,to record and analyze the first permanent molars′ health,the pit and fissure sealant. Results In 2013-2015,the first molars caries prevalence rates were 17.36%,15.72%,10.94% respectively,and there was no statistical difference.In 2013-2015,the rate of selant was 69.53%,74.31%,79.09% respectively,and there were significant differences(χ²=15.954,P<0.05).There was no significant difference in caries rate in each year.There was statistical difference in the rate of pit and fissure sealant.There was no statistical difference between the five schools.The sealant agreed rate increased year by year. Conclusions The caries rate of the first permanent molars in Qingdao Shibei district is higher,so the prevention and health care work still need to be strengthened.Parents′ recognition of pit and fissure sealant has increased.

Key words: the pit and fissure selant, the first permanent molars, children