Wang 2021
| Data type(s) | Epidemiology |
|---|---|
| Full citation | Wang R, He N, Wang Y, Hou G, Zhang P, Jin W. 2021. [Investigation and Analysis of Children's Dental Fluorosis and IQ Level in High Fluoride Areas of Hengshui City]. Chin J Pest Control 37(8):796-800. |
| Abstract | Objective To conduct dental fluorosis and intelligence quotient (IQ) on school-age children in high fluoride areas and control areas of Hengshui City, and to explore the influence of excess fluoride on children's intelligence. Methods. A total of 10 high fluoride villages and 10 normal water fluoride villages were selected by the stratified cluster random sampling method. The water improvement in the village was investigated, water fluoride value was monitored, and the children's dental fluorosis and OIQ levels were counted. Results. The average fluoride value of water in the high-fluoride zone was out of limit; the detection rate of children with dental fluorosis in the high-fluoride area was 60.7%, being significantly higher than 3.3% in the control area, the difference was statistically significant (Chi2=87.72, p<0.05); mean IQ of children in the high-fluoride area was higher than that of control area, the difference was statistically significant (t=5.27, p<0.05); the proportion of IQ<=69 in the high-fluoride area is higher than that in the control area, the difference was statistically significant (Chi2=9.55, p<0.05); mean IQ of children with non-fluorosis in high fluoride area was higher than that of children with dental fluorosis, and the difference was statistically significant (t=5.52, p<0.05). When the degree of dental fluorosis worsened, mean children IQ gradually decreased. Conclusion. The detection rate of dental fluorosis in children with high water fluoride area is higher; long-term excessive intake of fluoride both affects the teeth and IQ of children. It is necessary to throw concerns on the quality of water improvement and protects the health of children. |
| COI reported | --- |
| Study identifier | Wang 2021 |
| Author contacted? | true |
| Author contact details | Authors were contacted in April 2022 to obtain information for the risk of bias evaluation. The authors did not provide additional information, noting that it was confidential. |
Risk of bias
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