【摘要】 目的评估儿童窝沟封闭干预的远期效果,为开展儿童龋病的预防提供建议。方法采取分层随机整群抽样的方法分别对干预组与对照组的12岁儿童进行问卷调查与口腔检查。数据采用SPSS19.0进行统计分析。比较龋均差异采用独立样本的t检验,比较正确刷牙率、龋患率、牙龈出血率与牙结石检出率差异采用检验。结果干预组与对照组分别调查了2 321名与2 025名儿童,干预组与对照组正确刷牙率分别为22.58%与24.99%,差异无统计学意义(=3.48,P>0.05)。第一恒磨牙龋患率干预组为18.61%,对照组为23.85%,差异有统计学意义(=17.86,P<0.001)。干预组恒牙龋患率(28.09%)、全牙列龋患率(34.68%)均低于对照组(31.85%、45.53%),差异均有统计学意义(值分别为7.30与53.14,P<0.05),干预组与对照组龋均分别为0.90与0.65,差异有统计学意义(t=5.22,P<0.001)。结论儿童窝沟封闭对于预防龋齿发生远期效果明显,但需要持续加强儿童的口腔健康教育。更多还原

【Abstract】 Objective To assess the long- term effect of fissure sealant among children and provide the suggestion for caries prevention among children. Methods Children aged 12 years old in the intervention group and control group was sampled by random cluster sampling methods. Children sampled were surveyed with the questionnaire filled by themselves. The oral health check was conducted by trained dentists with one time CPI probe. Data were analyzed by SPSS 19. 0. DMFT between urban and rural children was compared by independent sample test. The rate of correcting teeth brushing,caries prevalence,the rate of gingival bleeding and detection rate of dental calculus were compared by Chi- square test. Results A total of 2321 children aged 12 years old in the intervention group and 2025 children aged 12 years old in the control group were surveyed. The rate of correct brushing teeth between the intervention and control group was 22. 58% and 24. 99%,which difference was significant(= 3. 48,P > 0. 05). The caries prevalence of sixth- year molar among children in the intervention group( 18. 61%) was lower than it in the control group( 23. 85%) significantly( = 17. 86,P < 0. 001). The caries prevalence of permanent teeth and all teeth in the intervention group( 28. 09%,34. 68%) was lower than it in the control group( 31. 85%,45. 53%) significantly(value: 7. 30 and 53. 14,P < 0. 05). DMFT of permanent teeth among children between the intervention group and control group was 0. 65 and 0. 90,which difference was significant( t = 5. 22,P < 0. 001). Conclusion Fissure sealant for children was effective for caries prevention in the long term. But it should be strengthened to conduct oral health education among children continually.更多还原