Downer M C, Drugan C S, Foster G R K, Tickle M
Oral Health Consultancy Services (OHCOSS), Bristol, UK.
Community Dent Health. 2011 Mar;28(1):34-9.
To estimate the potential reduction in dental caries among 5-6-year-old children in a city in the South West of England after six years of water fluoridation.
Thirteen out of 35 inner city wards and seven out of 43 outer city wards (sharing the same water supply) having the highest mean dmft of 5-6-year-olds (recorded in a census survey in 2005/6) and/or highest indexes of multiple deprivation (IMD) were the principal focal point. Population demographic data and 5-6-year-old caries prevalence and experience were examined. Mean IMD scores and aggregated, weighted mean values for dmft and caries prevalence were referred to previously published regression analyses of caries levels plotted against IMD for 34 fluoridated (F) and 233 non-fluoridated (NF) health districts in England in order to estimate potential caries reductions.
Mean dmft of 5-6-year-olds in the 20 wards with the highest caries levels and/or social deprivation was 2.10 (95% CI 1.87, 2.33) and caries prevalence 49% (95% CI 47%, 52%). In three wards, mean dmft exceeded 2.60. Population of the selected wards was approximately 210,800 with a mean IMD score of 33.70 As a conservative estimate, after six years of fluoridation a caries reduction of > 40% could be expected in 5-6-year-olds for the conurbation overall and for the 20 high caries/high IMD wards, with a gain of 12 percentage points in the absolute proportion caries-free. The overall population of the 78 wards served by the three relevant water treatment works identified was approximately 700,000.
On the basis of current caries levels and population demographics, it appears that a comprehensive fluoridation scheme covering the inner and outer city districts would substantially improve the dental health of the city's children.
评估在英格兰西南部某城市实施六年水氟化措施后，5至6岁儿童龋齿患病率的潜在降低情况。
以35个市中心城区中的13个以及43个市郊城区中的7个（共用同一供水系统）为主要研究对象，这些城区5至6岁儿童的平均乳牙龋失补牙面数（dmft）最高（于2005/2006年人口普查中记录），和/或多重贫困指数（IMD）最高。研究了人口统计数据以及5至6岁儿童的龋齿患病率和患病情况。参考之前发表的针对英格兰34个氟化（F）和233个非氟化（NF）健康区的龋齿水平与IMD关系的回归分析，得出IMD平均得分以及dmft和龋齿患病率的综合加权平均值，以估计潜在的龋齿减少情况。
在龋齿水平最高和/或社会贫困程度最高的20个城区中，5至6岁儿童的平均dmft为2.10（95%置信区间1.87，2.33），龋齿患病率为49%（95%置信区间47%，52%）。在三个城区中，平均dmft超过2.60。所选城区的人口约为210,800，平均IMD得分为33.70。作为保守估计，氟化六年之后，预计整个城市区域以及20个高龋齿/高IMD城区中，5至6岁儿童的龋齿患病率将降低超过40%，无龋儿童的绝对比例将增加12个百分点。确定由三个相关水处理厂供水的78个城区的总人口约为700,000。
基于当前的龋齿水平和人口统计数据，一项覆盖市中心和市郊城区的全面氟化计划似乎将大幅改善该市儿童的口腔健康状况。
