目的研究分析二年级学生六龄齿的健康状况,以了解六龄齿的保健现状与需求,更好的完善儿童口腔健康保障项目。方法按照《青岛市儿童口腔疾病基本预防项目实施方案》,分别在2013-2015年对于市北区五所小学的二年级学生(7~9岁)进行检查,记录分析六龄齿健康及窝沟封闭相应情况。结果 2013年六龄齿牙位患龋率为17.36%,窝沟封闭率为69.53%;2014年患龋率为15.72%,窝沟封闭率为74.31%;2015年患龋率为10.94%,窝沟封闭率为79.09%;各年度六龄齿患龋率差异无统计学意义,窝沟封闭率差异有统计学意义(χ~2=15.954,P<0.05)。市北区五所小学之间的六龄齿患龋率和窝沟封闭率无统计学差异。随着窝沟封闭项目的实施和普及教育,窝沟封闭率逐年上升。结论青岛市北区二年级学生的六龄齿患龋率较高,对于提高家长早期窝沟龋的预防保健工作仍需加强宣传指导。 Objective To study and analyze the health status of the sixth-grade teeth of sophomores in order to understand the health status quo and demand of the six-year-old teeth and to improve the child oral health protection project. Methods According to the Implementation Plan of Basic Prevention Program for Children’s Oral Diseases in Qingdao, the second-year students (7-9 years old) in five elementary schools in Shibei District were inspected in 2013-2015 respectively. The health and fissure sealant of sixth instar teeth were recorded and analyzed The corresponding situation. Results The prevalence of caries was 17.36% in 2013 and 69.53% in pit and fissure. The prevalence of caries in 2014 was 15.72% and the pit and fissure closed rate was 74.31%. The prevalence of caries was 10.94% in 2015 The sealing rate of the groove was 79.09%. There was no significant difference in the caries prevalence of six-year-old teeth in each year. There was significant difference in the pit and fissure sealability (χ ~ 2 = 15.954, P <0.05). There was no significant difference in caries prevalence and pit and fissure sealant between the six primary teeth of five primary schools in Shibei District. With the implementation of pit and fissure closed project and popularization of education, the pit and fissure sealant rate has been increasing year by year. Conclusion The prevalence of dental caries among the second-year students in the northern district of Qingdao City is higher than that of the sixth-grade dental caries. It is still necessary to strengthen the publicity and guidance for the prevention and care of pitting and caries in parents.