An investigation on drinking brick-tea type fluorosis of children in Guoluo Prefecture of Qinghai Province in 2017
10.3760/cma.j.issn.2095-4255.2019.02.014
- VernacularTitle:2017年青海省果洛州儿童饮茶型氟中毒流行现状调查
- Author:
Ping CHEN
1
;
Xianya MENG
;
Hong JIANG
;
Xiaomei YOU
;
Shengying WEI
;
Cuiling LA
;
Qiang ZHANG
;
Shengmei LI
;
Duolong HE
;
Ping YANG
Author Information
1. 青海省地方病预防控制所地方病预防控制科
- Keywords:
Child;
Fluorosis;
dental;
Brick-tea;
Investigation
- From:
Chinese Journal of Endemiology
2019;38(2):149-151
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the prevalence state of drinking brick-tea type fluorosis in children in Guoluo Prefecture,Qinghai Province.Methods According to the historical prevalence of drinking tea-type fluorosis in Guoluo Prefecture,in 2017,in 5 counties of Guoluo Prefecture,according to the pastoral area,agricultural area,semi-agricultural and semi-pastoral areas,each township (town) was selected,in each township (town) drawed a natural village in a ward as a survey point.At each survey site,drinking water samples of local residents were collected,and 10 households were selected,tea samples were collected,and dental fluorosis was investigated for children aged 8-12 years old.The mean of fluoride was determined by fluoride ion selective electrode method (GB/T 5750.5-2006,GB 19965-2005),and the dental fluorosis was diagnosed based on "Diagnosis of Dental Fluorosis" (WS/T 208-2011).Results The mean of fluoride in 85 water samples was 0.34 mg/L (0.20-0.77 mg/L),the mean of fluoride in 161 brick-tea samples was 579 mg/kg (110-1 278 mg/kg).The mean of daily fluoride intake of each person was 6.78 mg,among them,73.29％ (118/161) drank brick-tea,the detection rate of dental fluorosis of 2 083 children was 22.85％ (476/2 083),and the index of dental fluorosis was 0.42,the prevalence was weak.Conclusion The prevalence of drinking brick-tea type fluorosis of children in Guoluo Prefecture is less serious.
