Effects of Community Caries Preventive System for 1.5-year-old Children

评价了一个针对1.5岁儿童的社区防龋系统。在本项目中，所有受试者都可以免费接受为期两年的定期预防管理。目的：目的评价两年后的防龋效果和成本效益，并分析龋病患病率的相关因素。方法：本系统的参与者是1999年接受1岁半健康检查的3,686名儿童中的2,379名。他们在牙科诊所接受定期的预防管理。两年后，在1.5岁时用13个项目的调查表评估患龋率，并分析患龋率的相关因素。结果：参与组和非参与组在3.5岁时的dmf率分别为25.5%和42.4%。预防性管理的持续时间对dmf率有显著影响，小于6个月组为39.8%，6-12个月组为30.0%，12-18个月组为29.3%，18个月及以上组为20.3%。影响3.5岁儿童龋病患病率的显著因素有：“祖父母白天照顾孩子”、“晚上母乳喂养”、“晚上奶瓶喂养”、“软饮料”、“晚餐前2小时内吃零食”、“哥哥/姐姐有蛀牙”和“以前从未看过牙医进行口腔健康检查”。社区龋齿预防系统的总费用约为36 160 000日元。干预年与对照年相比，在长崎市3,300名3.5岁的受试者中，每增加1名无龋受试者的费用为158,091日元，每减少1名无龋受试者的费用为19,947日元。参加者组与非参加者组相比，dmf率降低16.9%，dmft指数降低0.88，每人花费10，847日元。

A community caries preventive system for 1.5-year-old children was evaluated. In this project, all the subjects could receive periodic preventive managements for two years free of charge. Objectives : The aim of study was to evaluate the caries preventive effects and its cost-benefit after two years, and to analyze the factors related to caries prevalence. Methods : The participants to this, system were 2,379 of 3,686 children who received a 1.5-year-old health checkup in 1999. They received periodic preventive managements at the dental offices. Two years later we evaluated caries prevalence and analyzed the factors related to caries prevalence using 13 items of the questionnaire at the age of 1.5 years. Results : dmf-rate at the age of 3.5 years was 25.5% for participant group, 42.4% for non-participant group, respectively. The duration of preventive managements influenced dmf-rate significantly ; 39.8% for the less than 6 months group, 30.0% for the 6-12 months group, 29.3% for the 12-18 months group and 20.3% for 18 months and more group. Statistically significant factors related to caries prevalence at the age of 3.5 years were "grandparents as a daytime caregiver", "breast feeding during the night", "bottle feeding during the night", soft drink", "snacks within 2 hours before dinner", "older brother/sister has cavities" and "never visited dentist for oral health checkup before". The total cost of the community caries preventive system was approximately \36,160,000. Compared the intervention year with the control year, it costs \158,091 in order to increase one subject who is caries free among 3,300 subjects aged 3.5 years in Nagasaki city, and it costs \19,947 in order to decrease 1 draft. Compared the participant group with the non-participant group, it costs \10,847 per person in order to get the decrease of 16.9% in dmf-rate and of 0.88 in dmft-index.