Estimation of Fluoride Content of Drinking Water in Dharan

2020 ◽  
Vol 3 (1) ◽  
pp. 88-95
Author(s):  
Bandana Koirala ◽  
Surya Raj Niraula ◽  
Anup Ghimire
Keyword(s):  
Drinking Water ◽  
Dental Caries ◽  
Water Supply ◽  
Optimal Level ◽  
Fluoride Content ◽  
Water Supplies ◽  
Effective Measure ◽  
Guideline Value ◽  
Guideline Values ◽  
Significant Difference

Introduction: Fluoride when present in drinking water at optimal level has been shown to promote oral health by preventing tooth decay. Dental caries represents a health problem that impacts on the medical, functional, nutritional and psychological status of patients in all the age groups. Fluoridation of public water supply is a safe, economical and effective measure to prevent dental caries. Objective: To estimate the level of fluoride present in drinking water supplies in all the wards of Dharan and to compare the fluoride concentration of its different water supply sources. Methods: One hundred water samples were collected from the various sources (ground water and surface water) and its different reservoirs along with random samples of 2-7 from all the wards of Dharan. The samples were then taken to the SEAM-N-MMA laboratory, Biratnagar to be tested for fluoride using the photometric method. Microsoft excel for data entry and SPSS 11.5 version for analysis were used. Significance of the variables was examined by Chi-square test. Results: The results of this study showed that in 96% of the samples taken, fluoride level was below the optimal. Only few samples met the lower range guideline value of Nepal (0.5 mg/l). Also, there was significant difference (p< 0.002) between the surface and consumer level fluoride. Conclusion: The fluoride content in drinking water supplies of Dharan was found to be below optimal level as per the national and WHO guideline values.

FLUORIDE AS A NUTRIEN

PEDIATRICS ◽  
1972 ◽  
Vol 49 (3) ◽  
pp. 456-460
Author(s):  
L. J. Filer ◽  
Lewis A. Barness ◽  
Richard B. Goldbloom ◽  
Malcolm A. Holliday ◽  
Robert W. Miller ◽  
...  
Keyword(s):  
Drinking Water ◽  
Dental Caries ◽  
Tooth Enamel ◽  
Dental Fluorosis ◽  
Normal Component ◽  
Fluoride Content ◽  
Water Supplies ◽  
Calcified Tissues

The association of mottled enamel and dental fluorosis with community drinking water was detected before 1920 and was specifically related to the fluoride content of the water when Churchill, in 1931,1 was able to measure trace amounts of fluoride in drinking water. Also, in areas with communal water supplies naturally contaming increased amounts of fluoride, the occurrence of dental caries was lower than that seen in the general population.2 These observations and subsequent studies3 led to the practice of adding fluoride to communal waters, with a consequent significant reduclion in the incidence of dental caries. Nearly 90 million persons in 7,500 communities4 use water supplies containing an amount of fluoride effective in reducing the dental caries rate. Fluoride is present in the customary diet and in most potable water sources in amounts that vary from 0.1 to 0.5 parts per million (ppm).5 The average dietary intake of fluoride is approximately 0.5 mg daily from these two sources. In the temperate zone, fluoridated community water supplies are increased in fluoride content to a level of 1.0 ppm, thus providing, on the average, a total fluoride ingestion of 1.5 mg per day. A lesser level of fluoridation may be sufficient in warmer climates conducive to a higher water consumption. Fluoride is regarded as an essential nutrient6 and it is now well known to be effective in the maintenance of a tooth enamel that is more resistant to decay. Fluoride is a normal component of tooth enamel and bone. Studies in vivo and in vitro demonstrate that the calcified tissues of both enamel and bone are made up of a combination of hydroxy- and fluor-apatites of varying composition, depending on the abundance of fluoride at the site of formation.

Water Quality and Health

1991 ◽  
Vol 23 (1-3) ◽  
pp. 201-209 ◽  
Author(s):  
W. Kreisel
Keyword(s):  
Water Quality ◽  
Developing Countries ◽  
Drinking Water ◽  
Water Supply ◽  
Human Health ◽  
Pollution Control ◽  
Wastewater Reuse ◽  
Water Supplies ◽  
Minimum Quality Standards ◽  
Quality Guidelines

Water quality can affect human health in various ways: through breeding of vectors, presence of pathogenic protozoa, helminths, bacteria and viruses, or through inorganic and organic chemicals. While traditional concern has been with pathogens and gastro-intestinal diseases, chemical pollutants in drinking-water supplies have in many instances reached proportions which affect human health, especially in cases of chronic exposure. Treatment of drinking-water, often grossly inadequate in developing countries, is the last barrier of health protection, but control at source is more effective for pollution control. Several WHO programmes of the International Drinking-Water Supply and Sanitation Decade have stimulated awareness of the importance of water quality in public water supplies. Three main streams have been followed during the eighties: guidelines for drinking-water quality, guidelines for wastewater reuse and the monitoring of freshwater quality. Following massive investments in the community water supply sector to provide people with adequate quantities of drinking-water, it becomes more and more important to also guarantee minimum quality standards. This has been recognized by many water and health authorities in developing countries and, as a result, WHO cooperates with many of them in establishing water quality laboratories and pollution control programmes.

Assessment of the drinking water quality for planning endogenic prevention of dental caries

2021 ◽  
Vol 21 (2) ◽  
pp. 88-93
Author(s):  
A. B. Shashmurina ◽  
O. L. Mishutina ◽  
V. R. Shashmurina
Keyword(s):  
Drinking Water ◽  
Dental Caries ◽  
Water Supply ◽  
Fluoride Concentration ◽  
Water Hardness ◽  
Drinking Water Supply ◽  
Ion Concentration ◽  
Normal Range ◽  
Hydrogen Ion Concentration ◽  
Normal Limits

Relevance. Dental caries is a leading dental disease in children. Aim – to study the quality of drinking water in Smolensk and its region to provide evidence for implementing dental caries preventive measures in children.Materials and methods. We took tap water samples from ten water intake points in seven districts of Smolensk and six Smolensk regions. An accredited testing laboratory of the Center for Hygiene and Epidemiology in the Smolensk Region carried out water chemical analysis. The study analyzed standard parameters of drinking water quality: pH 6.5-8.5, fluoride content 0.60-1.2 mg/l; water hardness 7.0-9.0 (Sanitary Regulations and Standards 2.1.4.1116-02). The parameter was considered normal if its 95% confidence interval was within the reference range.Results. In Smolensk, the hydrogen ion concentration in centralized drinking water supply systems is within normal limits and amounts to 7.39 (95% CI: 7.32-7.46; р < 0,05) pH units. The mean fluoride concentration in the Smolensk water is 0.19 (95% CI: 0.14-0.23; р < 0,05) mg/l, which is below the normal range. In most Smolensk districts, water hardness is within normal limits, 8.21 mmol/l (95% CI: 7.03-9.39; р < 0,05). However, the upper limit of the confidence interval of 9.39 mg/l and the maximum of 12.0 mg/l exceed the normal range. In the Smolensk region cities, the hydrogen ion concentration is 7.2 (95% CI: 7.02-7.38; р < 0,05) pH units in the centralized drinking water supply. The fluoride concentration in the Smolensk region water is 0.45 mg/l (95% CI: 0.23-0.68; р < 0,05), which demonstrates the fluoride deficiency in water. In the Smolensk region cities, mean water hardness is 6.66 mmol/l (95% CI: 6.00-7.03; р < 0,05), which is below the normal values. However, the CI upper limit of 7.03 mmol/l and the maximum of 7.05 mmol/l are within normal limits.Conclusions. The water of the centralized drinking water supply system in Smolensk and the Smolensk region is low in fluorides. Urgent community and individual preventive measures should be taken to expose children to fluoride.

scholarly journals Content of Fluorine in Drinking Water in FYR Macedonia

2014 ◽  
Vol 18 (1) ◽  
pp. 35-37
Author(s):  
M. Carcev ◽  
D. Gjorgev ◽  
F. Tozija ◽  
H. Petanovski
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Dental Caries ◽  
Water Supply ◽  
Longitudinal Studies ◽  
Optimal Concentration ◽  
Public Water Supply ◽  
The Public ◽  
Who Standards

Abstract From all the methods applied in preventing dental caries, the most significant is the use of fluorides. Nowadays, 6 decades after its massive use, it can certainly be argued that it is the most efficient, cheapest and safest way of preventing dental caries, confirmed by more than 150 longitudinal studies. In order to determine the presence of fluorides in drinking water, in coordination with the Institute for Public Health of the FYR Macedonia in 2009, we conducted a research for determining the presence of fluorides in drinking water from the public water supply in the country. The results from the research showed that concentration of fluorine in drinking water in our country is under 0.3ppm (0.3 mg per litre of water), which indicates a really low amount in accordance to the WHO standards. Optimal concentration was registered in only few water supply facilities in less settled areas, while hyper-fluorinated water was registered in few village wells, which were put out of use after they were located.

Assessing and managing fluorosis risk in children and adults in rural Madhya Pradesh, India

2011 ◽  
Vol 1 (2) ◽  
pp. 136-143 ◽  
Author(s):  
Sam Godfrey ◽  
Pawan Labhasetwar ◽  
Tapas Chakma ◽  
Satish Wate ◽  
Aditya Swami ◽  
...  
Keyword(s):  
Age Groups ◽  
Daily Intake ◽  
Madhya Pradesh ◽  
Fluoride Content ◽  
Baseline Survey ◽  
Nutritional Interventions ◽  
Chemical Risk Assessment ◽  
Guideline Value ◽  
Guideline Values ◽  
The Impact

This paper presents the application of quantitative chemical risk assessment for assessing and managing fluorosis in 19 schools and 6 villages in Madhya Pradesh, India. A longitudinal study was undertaken with a baseline survey in 2005 and an endline in 2007. Household surveys, water quality and food analysis were undertaken to measure the impact of an Integrated Fluorosis Mitigation programme that included water and nutritional interventions. The baseline survey indicated a maximum fluoride content of 7.8 mg/l in food and 3.7 mg/l in water, equating to a maximum fluoride uptake of 4.8 and 3.7 mg/l in food and water respectively. Mean (actual) daily intake of fluoride for all exposure routes was 0.4 mg/kg of combined adult and child body weight. Intake of fluoride through food was more than 40% of total intake. Calculated guideline values for age groups &lt;18 years and &gt;18 years were 1.7 and 1.9 mg/l respectively. Using WHO methodology, the Guideline Value would be 1.7 mg/l. Fluoride dilution was implemented to reduce the fluoride content to below this level. The endline survey indicated reduction in the prevalence of grade 1 fluorosis of 86%, of grade 2 of 77%, of grade 4 of 60% in all children examined.

scholarly journals Natural fluoride levels from public water supplies in Piauí State, Brazil

2009 ◽  
Vol 14 (6) ◽  
pp. 2215-2220 ◽  
Author(s):  
Josiene Saibrosa da Silva ◽  
Wallesk Gomes Moreno ◽  
Franklin Delano Soares Forte ◽  
Fábio Correia Sampaio
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Urban Areas ◽  
Urban Population ◽  
Dental Fluorosis ◽  
Fluoride Concentration ◽  
Public Water Supply ◽  
Water Supplies ◽  
Two Samples ◽  
High Prevalence

The aim of this work was to determine the natural fluoride concentrations in public water supplies in Piauí State, Brazil, in order to identify cities in risk for high prevalence of dental fluorosis. For each city, two samples of drinking water were collected in the urban area: one from the main public water supply and another from a public or residential tap from the same source. Fluoride analyses were carried out in duplicate using a specific ion electrode and TISAB II. From a total of 222 cities in Piauí, 164 (73.8%) samples were analyzed. Urban population in these towns corresponds to 92.5% of the whole state with an estimated population of 1,654,563 inhabitants from the total urban population (1,788,590 inhabitants). A total of 151 cities showed low fluoride levels (<0.30 mg/L) and 13 were just below optimum fluoride concentration in the drinking water (0.31-0.59 mg/L). High natural fluoride concentration above 0.81 mg/L was not observed in any of the surveyed cities. As a conclusion, most of the cities in Piauí have low fluoride concentration in the drinking water. The risk for a high prevalence of dental fluorosis in these urban areas due to natural fluoride in the water supplies is very unlikely. Thus, surveys about the dental fluorosis prevalence in Piauí should be related with data about the consumption of fluoridated dentifrices and other fluoride sources.

scholarly journals Public health without water? Emergency water supply and minimum supply standards of hospitals in high-income countries using the example of Germany and Austria

Water Policy ◽  
2021 ◽  
Author(s):  
L. Bross ◽  
J. Bäumer ◽  
I. Voggenreiter ◽  
I. Wienand ◽  
A. Fekete
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
High Water ◽  
Humanitarian Assistance ◽  
Scientific Publications ◽  
Core Element ◽  
International Agencies ◽  
Guideline Values ◽  
Supply Planning ◽  
Emergency Water Supply

Abstract The drinking water supply is a core element of national regulations for normal and emergency supply as well as coping with crisis events. Particularly with regard to the interdependence of critical infrastructures means that water supply failures can have far-reaching consequences and endanger the safety of a society, e.g., by impairing hospital operations. In case of an emergency in the drinking water infrastructure, minimum supply standards, e.g., for patients in hospitals, become important for emergency management during crisis situations. However, wider recognition of this issue is still lacking, particularly in countries facing comparably minor water supply disruptions. Several international agencies provide guideline values for minimum water supply standards for hospitals in case of a disaster. Acknowledging these minimum standards were developed for humanitarian assistance or civil protection, it remains to be analyzed whether these standards apply to disaster management in countries with high water and healthcare supply standards. Based on a literature review of scientific publications and humanitarian guidelines, as well as policies from selected countries, current processes, contents, and shortcomings of emergency water supply planning are assessed. To close the identified gaps, this paper indicates potential improvements for emergency water supply planning in general as well as for supply of hospitals and identifies future fields of research.

Fluoride and Dental Caries

PEDIATRICS ◽  
1957 ◽  
Vol 20 (5) ◽  
pp. 919-920
Author(s):  
NORMAN TRIEGER
Keyword(s):  
Dental Caries ◽  
Water Supply ◽  
Research Council ◽  
Dental Health ◽  
National Research Council ◽  
Water Supplies ◽  
Municipal Water ◽  
Fluoride Intake

The benefits to the teeth derived from controlled supplements of fluoride to the communal water supply have been well documented. However, it has been estimated by the National Research Council (The Problem of Providing Optimum Fluoride Intake for Prevention of Dental Caries. A Report of the Committee on Dental Health, Division of Biology and Agriculture, National Research Council, Publication 294, November, 1953) that even if all municipal water supplies were fluoridated, close to half the population would still be without this benefit.

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