scholarly journals The contribution of drinking water fluoride to the risk of dental fluorosis in Estonia

2007 ◽  
Author(s):  
E. Indermitte ◽  
A. Saava ◽  
S. Russak ◽  
A. Kull
Keyword(s):  
Drinking Water ◽  
Dental Fluorosis ◽  
Water Fluoride

scholarly journals Fluoride Exposure through Different Drinking Water Sources in a Contaminated Basin in Guanajuato, Mexico: A Deterministic Human Health Risk Assessment

2021 ◽  
Vol 18 (21) ◽  
pp. 11490
Author(s):  
Paulina Farías ◽  
Jesús Alejandro Estevez-García ◽  
Erika Noelia Onofre-Pardo ◽  
María Luisa Pérez-Humara ◽  
Elodia Rojas-Lima ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Dental Fluorosis ◽  
Water Source ◽  
Water Sources ◽  
Drinking Water Source ◽  
Drinking Water Sources ◽  
Fluoride Exposure ◽  
Urinary Fluoride ◽  
Water Fluoride

Water fluoride levels above the World Health Organization’s guideline (1.5 mg/L), common in overexploited aquifers, represent a health hazard. Our objective was to assess the health risks posed by exposure to fluoride in different drinking water sources in a contaminated basin in Mexico. Fluoride was measured in mutual drinking water sources and in the urine of 39 children and women. Risks were estimated through hazard quotient (HQ) by drinking water source. Dental fluorosis was assessed in the children. Mean fluoride water concentrations (mg/L) were: well, 4.2; waterhole, 2.7; bottled, 2.1; rainwater, 0.4. The mean urinary fluoride concentrations (specific gravity adjusted) were 2.1 mg/L and 3.2 mg/L in children and women, respectively. Our multiple linear regression model showed children’s urinary fluoride concentrations increased 0.96 mg/L for every 1 mg/L increase in water fluoride (p < 0.001). Dental fluorosis was diagnosed in 82% of the children, and their HQ according to drinking water source was: well, 1.5; waterhole, 1.1; bottled, 0.8; harvested rainwater, 0.3. The pervasive dental fluorosis indicates a toxic past fluoride exposure; urinary fluoride levels and HQs indicate high exposure and current health risks for most children. Drinking harvested rainwater will likely prevent most of the local fluoride exposure.

scholarly journals Frequency of Dental Fluorosis in Population Drinking Water with High Fluoride Level in Thar

2020 ◽  
Vol 29 (04) ◽  
pp. 259-263
Author(s):  
Iftekhar Ahmed ◽  
◽  
Anwar Ali ◽  
Marium Zaheer ◽  
Ibraj Fatima ◽  
...  
Keyword(s):  
Drinking Water ◽  
Dental Fluorosis ◽  
National Level ◽  
Underground Water ◽  
Fluoride Content ◽  
Fluoride Level ◽  
Exposed Area ◽  
High Fluoride ◽  
High Level ◽  
Water Fluoride

OBJECTIVE: The objective of this study is to see the frequency of dental fluorosis in exposed area (Sammo Rind village of Thar District) and in unexposed area of Gadap town of Karachi and to find the association of fluoride level with dental fluorosis in both groups. METHODOLOGY: The water samples were taken from both the sites and fluoride estimation in water and geometrical, was determined using Fluoride Ion Selective Electrode (FISE) method. By random selection 121 subjects from Sammo Rind village and 121 controls from Gadap Town Karachi were included in study after informed consent. The participants were clinically examined by an expert university teacher dentist in proper dental setups in examination lights. RESULTS: A frequency of dental fluorosis of 100% was found among the study subjects with fluoride content as high as 6- 8 mg/dl as compared to prevalence of dental fluorosis 17.4% in unexposed group with water fluoride content as low as 0.30mg/dl. CONCLUSIONS: The high level of underground water fluoride level and cent per cent dental fluorosis in Thar area is an alarming situation that should be addressed immediately at national level. KEYWORDS: Exposed area, Dental Flurosis, Fluoride Level, Water Sample HOW TO CITE: Ahmed I, Ali A, Zaheer M, Fatima I, Khan N. Frequency of dental fluorosis in population drinking water with high fluoride level in Thar. J Pak Dent Assoc 2020;29(4):259-263. DOI: https://doi.org/10.25301/JPDA.294.259

Drinking Water Fluoride Levels, Dental Fluorosis, and Caries Experience in Brazil

1996 ◽  
Vol 56 (4) ◽  
pp. 226-228 ◽  
Author(s):  
Denise Fonseca Cortes ◽  
Roger Phillip Ellwood ◽  
Dennis M. O'Mullane ◽  
Jose Roberto Magalhaes Bastos
Keyword(s):  
Drinking Water ◽  
Dental Fluorosis ◽  
Caries Experience ◽  
Water Fluoride

scholarly journals Dental caries and its association with increasing water fluoride concentration in district Rudraprayag, Uttarakhand

2021 ◽  
Vol 8 (8) ◽  
pp. 4005
Author(s):  
Nidhi Sharma ◽  
Vartika Saxena ◽  
Manisha Naithani
Keyword(s):  
Drinking Water ◽  
Dental Caries ◽  
Dental Fluorosis ◽  
Fluoride Concentration ◽  
World Health ◽  
Therapeutic Window ◽  
Caries Experience ◽  
Fluoride Level ◽  
Cross Sectional ◽  
Water Fluoride

Background: Evidence from scientific literature confirms both beneficial and detrimental effects of fluoride on human health with only a narrow range between intakes associated with these effects. The limits of this range have been controversial among researchers since the 1930s. Considering this, the World Health Organization (WHO) permissible limit of fluoride in India has been reduced from 1.5 to 1.0 mg/l in 1998. This study aimed to evaluate the association between increasing water fluoride levels and dental caries prevention on permanent teeth.Methods: This cross-sectional study involved 1400 children (aged 6–19 years). Caries experience and dental fluorosis were recorded using DMFT/deft and Dean's index respectively. Also, fluoride concentration in drinking water was analyzed. Around 14.4% of children had dental caries with maximum frequency among 9-10 years of age. A significant negative correlation between caries experience and water fluoride level was found (p<0.05), with the lowest DMFT scores at the fluoride level of 0.61–2 mg/l and the highest at 0.0–0.3 mg/l. Whereas, high prevalence of dental fluorosis was observed above 0.7 mg/l.Results: The study revealed that the presence of 0.3-0.7 mg/l fluoride in drinking water reduces dental caries, without an objectionable rise in dental fluorosis.Conclusions: It can be suggested that fluoride has anticaries property but due to a ‘narrow therapeutic window’ of 0.3-0.7 mg/l, in a country like India where endemic fluorosis is prevalent, its topical application should be encouraged which is almost equally effective with less systemic adverse effects.

Patterns of Dental Fluorosis in a European Country in Relation to the Fluoride Concentration of Drinking Water

1987 ◽  
Vol 66 (1) ◽  
pp. 10-12 ◽  
Author(s):  
M.J. Larsen ◽  
E. Kirkegaard ◽  
S. Poulsen
Keyword(s):  
Drinking Water ◽  
European Country ◽  
Classification System ◽  
Dental Fluorosis ◽  
Fluoride Concentration ◽  
Actual Amount ◽  
Patterns Of Use ◽  
Water Fluoride ◽  
Lower Incisors

Dental fluorosis among 456 14-16-year-old schoolchildren who had resided continuously since birth in their respective study areas was recorded using the Thylstrup and Fejerskov classification system. The children fell into four groups according to fluoride concentration of their drinking water: (1) less than or equal to 0.1 ppm; (2) 0.3-0.5 ppm; (3) 0.5-1.25 ppm; and (4) 1.26-2.0 ppm. It was found that the later in childhood the tooth was formed, the higher was the prevalence of dental fluorosis. The fluoride concentration in the drinking water affected the prevalence of dental fluorosis in all teeth except the lower incisors, which are formed very early in life. Apart from these teeth, the proportionate increase of dental fluorosis with increasing water fluoride concentration was almost the same for all tooth types. However, the actual amount of increase in the prevalence and degree of fluorosis was greatest among those teeth that formed later during childhood. The observed fluorosis is presumed to result from and reflect the drinking water habits in the population as well as the patterns of use of fluoride prophylactics.

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