作者：刘忠慧differentprojectsyearsdentalfluorosistianjin
摘要：Objective To investigate the influence of differentwater-improving defluoridation projects and different water-improving years on children's dental fluorosis,and toprovide a scientific basis for further defluoridation ofdrinking water. Methods Totally one fourth of endemicfluorosis villages in all agricultural-related areas of Tianjinwere selected by random sampling method from 2016to 2017. The situation of water-improving defluoridationproject was investigated in these villages. The ways ofwater improvement included municipal water supply,double pipe network,barreled water,low fluorine welland centralized water supply.
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