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目的探讨2013-2015年杭州市6~10岁儿童恒牙龋病流行病学趋势,为了解恒牙龋齿高发群体并为其提供针对性预防措施提供依据。方法采用多阶段分层随机抽样法,随机抽取杭州市6所小学,在2013-2015年的3年间参考WHO《口腔健康调查基本方法(第4版)》相关标准对在读的6~10岁儿童进行恒牙龋病检查。结果 2013-2015年间,杭州市6所小学的6 212例6~10岁受检儿童中共检出恒牙患龋者2 157例,患龋率为34.72%;其中2013年检出806例(36.84%),2014年检出695例(35.14%),2015年检出656例(32.06%),三年间差异有统计学意义(χ~2=10.85,P<0.05)。女生2015年患龋率明显低于2013年和2014年,3年间患龋率比较差异有统计学意义(χ~2=6.83,P<0.05);男生2014年及2015年患龋率明显低于2013年(χ~2=14.86,P<0.05),且男生低于女生患龋率,差异有统计学意义(χ~2=11.01,P<0.05)。2 157例患龋儿童中,患龋坏牙者1 947例(90.26%),因龋缺失牙者共计38例(1.76%),因龋填充者172例(7.97%);其中2013年因龋填充者50例(6.20%),2014年填充59例(8.49%),2015年填充63例(9.60%),2015年恒牙龋病填充率明显高于2013年,差异有统计学意义(χ~2=6.07,P<0.05)。结论 2013-2015年间,杭州市6~10岁儿童恒牙患龋率呈逐渐降低趋势、因龋填充率则呈逐渐递增趋势,口腔卫生保健及防治工作初见成效。
Objective To investigate the epidemiological trends of permanent dental caries in children aged 6 ~ 10 in Hangzhou during 2013-2015, and to provide basis for understanding the high incidence of dental caries in permanent teeth and providing targeted preventive measures. Methods The stratified random sampling method was used to randomly select 6 primary schools in Hangzhou City. According to the WHO Oral Health Survey Basic Methods (4th Edition) For permanent dental caries examination. Results Between 2013 and 2015, 2 157 children aged 6-10 years old from 6 212 primary schools in Hangzhou were found to have 2 157 cases of permanent caries, the prevalence of caries was 34.72%. Among them, 806 cases were detected in 2013 (36.84 614 cases (35.14%) were detected in 2014 and 656 cases (32.06%) were detected in 2015. There was a significant difference in three years (χ ~ 2 = 10.85, P <0.05). The caries prevalence of girls in 2015 was significantly lower than that in 2013 and 2014, and there was significant difference in caries prevalence in three years (χ ~ 2 = 6.83, P <0.05). The caries prevalence of boys in 2014 and 2015 was significantly lower than In 2013 (χ ~ 2 = 14.86, P <0.05), the prevalence of dental caries in boys was lower than that in girls (χ ~ 2 = 11.01, P <0.05). There were 1 947 cases (90.26%) of caries-bearing children with caries in 2 157 cases, 38 cases (1.76%) in caries-missing cases and 172 cases (7.97%) in caries-filled cases. Among them, 50 cases (6.6%) were filled in 2014, 59 cases (8.49%) were filled in 2014 and 63 cases (9.60%) were filled in 2015. The filling rate of permanent caries in 2015 was significantly higher than that in 2013 (χ ~ 2 = 6.07, P <0.05). Conclusion During 2013-2015, the caries prevalence of permanent dentition in children aged 6 ~ 10 years in Hangzhou showed a gradual decreasing trend. The caries filling rate showed a gradual increasing trend, and oral health care and prevention and treatment work had achieved initial success.