Slade G D, Davies M J, Spencer A J, Stewart J F
Department of Dentistry, University of Adelaide, South Australia.
J Public Health Dent. 1995 Fall;55(4):218-28. doi: 10.1111/j.1752-7325.1995.tb02373.x.
This study assessed associations between exposure to fluoride in water and dental caries experience among children in two Australian states.
Cross-sectional data were obtained from 9,690 South Australian children aged 5-15 years and 10,195 Queensland children aged 5-12 years. School dental service practitioners recorded DMFS and dmfs data. A questionnaire to parents gained information about residential history that was used to calculate children's percent of lifetime exposed to fluoridated water.
Greater exposure to fluoride in water was associated with lower dmfs and DMFS in both states (P < .01), although in South Australia the effect for DMFS was statistically significant only after controlling for extent of unknown fluoridation exposure and for fluoride supplements. Caries-fluoridation associations were stronger for dmfs compared with DMFS and for Queensland (5% of population fluoridated) compared with South Australia (70% of population fluoridated). Effects for DMFS persisted after controlling for socioeconomic factors.
Fluoridation was associated with lower caries experience. The weaker association with DMFS in South Australia may be due to less caries and more fissure sealants in that state, and is consistent with a "diffusion" effect, whereby a high proportion of the population exposed to fluoridation diminishes differences among exposure groups.
本研究评估了澳大利亚两个州儿童的饮水氟暴露与龋齿经历之间的关联。
获取了南澳大利亚州9690名5至15岁儿童和昆士兰州10195名5至12岁儿童的横断面数据。学校牙科服务从业者记录了DMFS和dmfs数据。通过向家长发放问卷获取了居住史信息，用于计算儿童一生饮用含氟水的百分比。
在两个州，饮水氟暴露增加均与较低的dmfs和DMFS相关（P < 0.01），不过在南澳大利亚州，仅在控制了未知氟暴露程度和氟补充剂后，DMFS的这种关联才具有统计学意义。与DMFS相比，dmfs的龋齿 - 氟关联更强；与南澳大利亚州（70%的人口饮用含氟水）相比，昆士兰州（5%的人口饮用含氟水）的这种关联更强。在控制社会经济因素后，DMFS的关联依然存在。
饮水加氟与较低的龋齿经历相关。南澳大利亚州DMFS关联较弱可能是由于该州龋齿较少且窝沟封闭剂使用较多，这与“扩散”效应一致，即高比例的人口饮用含氟水会减少暴露组之间的差异。
