The situation on prevention and control of drinking-water-type endemic fluorosis in the diseased areas and the monitoring results of dental fluorosis in children in Inner Mongolia Autonomous Region from 2013 to 2016
10.3760/cma.j.issn.2095-4255.2018.09.011
- VernacularTitle:2013-2016年内蒙古自治区饮水型地方性氟中毒病区防控现状及儿童氟斑牙监测结果分析
- Author:
Xiaojuan YANG
1
;
Zhenlin LI
;
Chengxiang ZHAO
;
Bo CHEN
;
Zili CHANG
Author Information
1. 内蒙古自治区综合疾病预防控制中心地方性氟中毒防治科
- Keywords:
Fluorosis,dental;
Child;
Epidemiological monitoring
- From:
Chinese Journal of Endemiology
2018;37(9):733-736
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the operating condition of water-improvement projects and the prevalence trends of dental fluorosis of children aged 8 to 12 in drinking-water-type fluorosis areas in Inner Mongolia Autonomous Region (Inner Mongolia),and to evaluate the effectiveness of control measures.Methods In 2013-2016,ten counties were sampled from all fluorosis counties in Inner Mongolia,and 3 villages were then sampled as fixed monitoring villages in each selected county.The monitored villages were divided into 3 groups according to the condition whether the village had improved water quality,the project operating condition and whether the fluorine content of water was qualified.The operating condition of water-improvement projects,the fluorine content of water and the prevalence of dental fluorosis of all children aged 8 to 12 were investigated.Results Both the number of water improvement-projects (22,22,23 and 24 projects) and the number of villages with water-improvement projects (22,23,24 and 26 villages) were increased from 2013 to 2016,the normal operation rates of water-improvement projects were 90.91％ (20/22)-95.83％ (23/24).The water fluoride content was compared among qualified water-improved villages,unqualified water-improved villages and water-unimproved villages [(0.83 ± 0.27),(1.77 ± 0.72),(2.31 ± 1.02) mg/L],the differences were statistically significant (F =60.889,P ＜ 0.05),the water fluorosis content of qualified water-improved villages was lower than that of unqualified water-improved villages and water-unimproved villages,respectively (P ＜ 0.05).The detection rate of children's dental fluorosis was compared among the 3 groups [21.48％ (441/2 053),48.68％ (240/493),37.02％ (308/832)],the differences were statistically significant (x2 =171.889,P ＜ 0.05),the detection rate of children's dental fluorosis of qualified water-improved villages was lower than that of unqualified water-improved villages and water-unimproved villages,respectively (P ＜ 0.01).Conclusion The prevalence of children's dental fluorosis in Inner Mongolia has been controlled to some degree,and the water-improvement projects that in good working condition play an important role in prevention and control of dental fluorosis.
