RESUMO
Objective To evaluate the effectiveness of comprehensive prevention and control measures on coal-burning-borne endemic tluorosis in Xishui,on residents healthy behavior and situation of the disease.Methods In 2013,five towns were selected according to their location of east,south,west,north and centre.Three villages and one elementary school in each town were chosen,and 20 families' related behavior and fluorine prevention knowledge questionnaire in each village were surveyed.All the students from one class aged 8-12 of grade 3-6 in each school were selected,according to the Diagnosis of Dental Fluorosis,dental fluorosis was examined and fluorine knowledge questionnaire was surveyed.At the same time,the detection rate of dental fluorosis of children aged 8-12,information of the knowledge about prevention and cure of fluorosis and related behavior of target groups in 2007,and the urinary fluoride contents of children aged 8-12 in 2000 were collected.Analysis and comparison of the data in 2000,2007 and 2013 were done.Results After the intervention,the witting rates of students and family householders 90.95％ (11 773/12 945),84.27％ (3 792/4 500),were significantly higher than those of before the intervention [19.29％ (1 039/5 385),26.27％ (394/1 500),x2 =9 279.14,1 794.22,all P ＜ 0.01].Proper utilization rate of cooking stove was 100.00％ (37/37),iron stove utilization rate was 99.64％ (279/280),dry chili correct rate was 100.00％ (299/299) and before the intervention,these values were 3.20％ (43/1 345),90.28％ (1 207/1 337)and 62.14％ (855/1 376),respectively,and the differences were statistically significant (x2 =601.12,27.28,27.28,all P ＜ 0.01).Children's dental fluorosis detection rate was 24.21％ (206/851),compared with that of before the intervention,61.62％ (2 150/3 489),the difference was statistically significant (x2 =385.93,P ＜ 0.01).Children's urine fluoride was (0.51 ± 0.29) mg/L,and before the intervention [(1.55± 1.59) mg/L],the difference was statistically significant (t'=10.25,P ＜ 0.01).Conclusions The effect of comprehensive prevention and control measures against coal-burning-borne endemic fluorosis in Xishui are remarkable.The residents health related behavior has been formed and the condition is reduced markedly.