Abstract
Objective: To investigate the relationship between age, dental fluorosis and intelligence in children aged 8-12 in coal-burning fluorosis (CBF) area, Guizhou province.
Methods: A cross-sectional study was conducted to investigate the prevalence of dental fluorosis and intellectual level in 284 children (n=167 for CBF area, n=120 for control are) aged 8- 12 in Mar., 2015. The difference of intelligence level with different levels of dental fluorosis were analyzed.
Results: The prevalence rate of dental fluorosis of children in the endemic fluorosis area was 53.9%, which was significantly higher than that in the control (P<0.011), the dental fluorosis index was 0.59, which meant the area was an edge of epidemic area of endemic fluorosis. The standard score of Raven’s Standard Progressive Matrices (RSPM) of children in endemic area was lower than that in the control (Z=3.124, P=0.002). The intelligence level in endemic area was lower compared with the control and showed a significant difference in 12- year old group (Z=3.244 , P=0.001), no signif1cant relationship between intelligence level and levels of dental fluorosis was seen (H=5.057, P=0.281) . However, the degree of intelligence level negatively c0rrelated with age (r=-0.232, P=0.003).
Conclusion: The intelligence level of children livng in the endemic fluorosis area is lower and more further research need to be done to show the reason.
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Expert panel meeting on the health effects of fluoride in drinking water: Summary report.
Notes: While the pdf of this report is attached, the summary below is dated June 8-9, 2023 and modified on February 6, 2024. It is online at https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/water-quality/expert-panel-meeting-effects-fluoride-drinking-summary.html This report pertains to the Expert Panel for the February 6, 2024, report titled: Systematic review of epidemiological and toxicological evidence on health effects of
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The cholinergic system, intelligence, and dental fluorosis in school-aged children with low-to-moderate fluoride exposure.
Highlights Low-to-moderate fluoride was associated with alterations of cholinergic system. The prevalence of dental fluorosis (DF) was related to cholinergic system. AChE was negatively associated with children’s intelligence quotient (IQ). AChE mediates association of fluoride with DF prevalence and lower odds of IQ > 120. DF and IQ were
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Assessment of intelligence quotient among schoolchildren of fishermen community of Kutch, Gujarat, India
Background and aim: The aim of the study was to assess the intelligence quotient of fishermen schoolchildren of Kutch, Gujarat, India. Materials and methods: A descriptive cross-sectional study was conducted among 8 to 10 years old schoolchildren living in Kutch District, Gujarat, India, from January to February 2013. Seguin Form Board
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Refinement Impairments of Verbal-Performance Intelligent Quotient in Children Exposed to Fluoride Produced by Coal Burning.
To explore the relationship between total intelligence quotient (IQ), verbal intelligence quotient (VIQ), performance intelligence quotient (PIQ), and fluoride exposure in children aged 8–12 years in coal-burning fluorosis area of Dafang County, Guizhou Province, China. The Wechsler Intelligence Scale for Children Revised in China (WISC-CR) was used to test the total
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The influence of fluoride in drinking water on the incidence of fluorosis and intelligence of elementary school students in Palu City.
Abstract Objective This research aims to know the influence of fluoride in drinking water towards Fluorosis and the Intelligence Level of Elementary School Students in Palu City. Method This cross-sectional study was performed through descriptive analysis on 100 students aged 6–12 years old selected by stratified random sampling from two different areas with different
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Fluoride & IQ: 76 Studies
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Fluoride Affects Learning & Memory in Animals
An association between elevated fluoride exposure and reduced intelligence has now been observed in 65 IQ studies. Although a link between fluoride and intelligence might initially seem surprising or random, it is actually consistent with a large body of animal research. This animal research includes the following 45 studies (out
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Dental Fluorosis Is a "Hypo-mineralization" of Enamel
Teeth with fluorosis have an increase in porosity in the subsurface enamel ("hypomineralization"). The increased porosity of enamel found in fluorosis is a result of a fluoride-induced impairment in the clearance of proteins (amelogenins) from the developing teeth. Despite over 50 years of research, the exact mechanism by which fluoride impairs amelogin
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Dental Fluorosis Impacts Dentin in Addition to Enamel
Dental fluorosis is a mineralization defect of tooth enamel marked by increased subsurface porosity. The enamel, however, is not the only component of teeth that is effected. As several studies have demonstrated, dental fluorosis can also impair the mineralization of dentin as well. As noted in one review: "The fact that
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Fluoride: Developmental Neurotoxicity.
Developmental Neurotoxicity There has been a tremendous amount of research done on the association of exposure to fluoride with developmental neurotoxicity. There are over 60 studies reporting reduced IQ in children and several on the impaired learning/memory in animals. And there are studies which link fluoride to Attention Deficit Hyperactivity Disorder. Teaching
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