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目的:调查杭州市中小学生免费窝沟封闭项目在适龄人群的封闭率和未封闭的原因,探讨提高窝沟封闭在适龄人群中封闭率的可能途径。方法:以封闭率作为窝沟封闭覆盖率的指标,统计适龄人群窝沟封闭的覆盖率和不能封闭的原因。重点关注窝沟封闭列为公共卫生项目后3年间的资料,评估作为公共卫生项目的合理性。结果:适龄人群封闭率平均为52.89%。其中,在进校实施窝沟封闭时,适龄学生牙未萌与未充分萌出、学生和家长不同意是不能封闭的主要原因。结论:现阶段窝沟封闭的封闭率显著偏低,造成未封闭的原因大部分是可控的。通过科学调整,封闭率可大幅提高。应充分考虑牙萌出的时间差异,分时段组织医疗队进校实施窝沟封闭。为体现公共卫生的均等性,对不适宜进行窝沟封闭的适龄学生,可辅助其他口腔预防的适宜技术。
Objective: To investigate the reasons for the closure rate and openness of free-pit and fissure sealant for primary and secondary school students in Hangzhou, and to explore possible ways to improve the closure rate of fissure-sealant in the age-appropriate population. Methods: The rate of occlusion was taken as the index of sealant coverage. The coverage of sealant and the reason of incapacity were calculated. Focusing on the three years since the pit and fissure closure was listed as a public health project, the rationality of being a public health project was evaluated. Results: The closure rate of the average age group was 52.89%. Among them, the implementation of pit and fissure into the school closed, the students did not eyelid age and not fully erupted, students and parents do not agree is the main reason can not be closed. Conclusion: At this stage, the sealing ratio of fissure sealant is significantly lower, which causes most of the causes of non-occlusion are controllable. Through scientific adjustment, closure rate can be substantially increased. Should take full account of the time difference of teeth eruption, sub-groups of medical teams into the school to implement pit and ditch closure. In order to embody the equality of public health, appropriate technology for assisting other oral prophylaxis is available for the right-age students unsuitable for pit and fissure sealant.