According to the World Health Organization recommendation, the optimal fluoride concentration levels in drinking water have to be in the range of 0.5 and 1.5 mg/L since this permissible range is essential for normal mineralization of bones and teeth as well as for dental enamel formation in human's body Bell and budwig, 1970;Adimalla and Venkatayogi, 2017;Narsimha and Sudarshan, 2013,2016;2017[...

BACKGROUND There are concerns that altered thyroid functioning could be the result of ingesting too much fluoride. Community water fluoridation (CWF) is an important source of fluoride exposure. Our objectives were to examine the association between fluoride exposure and (1) diagnosis of a thyroid condition and (2) indicators of thyroid functioning among a national population-based sample of Ca...

The purpose of our study was to assess whether the chemical composition of drinking water in the city of Szczecin, Poland, creates the correct environment in the oral cavity for promoting regeneration processes in the mineralized tissue of teeth. The drinking water samples were collected from a water treatment station, as raw and treatment water, and from consumer’s water pipes. The concentrati...

Over the last few decades the water quality is deteriorating in arid and semi-arid regions. Phulera tehsil is facing the problem of groundwater pollution. In the present investigation, determination of fluoride (F) in drinking water was conducted in (200 samples of) 40 villages of Phulera fehsil having fluoride content more than permissible limits (> 1.5 mg l(-1)). After the pilot survey sympto...

T HE DENTAL benefits from drinking water containing about 1 part per million (1 ppm = 1 mg/I) of fluoride ion during childhood are well known. The safety of adjusting public supplies of drinking water to this content of fluoride in temperate climates (or to about 0.7 ppm in hotter areas) is universally accepted among reputable professional groups with an interest in the problem of dental caries...

Introduction Many studies have shown that fluoride can cross the placenta and that exposure to high fluoride during pregnancy may result in premature birth and/or a low birth weight. Lamphun is one of six provinces in Thailand where natural water fluoride (WF) concentrations >10.0 mg/L were found, and it was also found that >50% of households used water with high fluoride levels. Nevertheless, ...

Excessive fluoride intoxication plays an important role in the development of dental, skeletal and non-skeletal fluorosis. The aim of this study was to ascertain the toxic effect of excessive fluoride ingestion on the level of hydroxyproline and expression of type 1 collagen gene in rat bone and its amelioration by supplementation with Tamarindus indica fruit pulp extract. Forty albino rats wer...

CONTEXT Bottled water has become a status symbol and is frequently used in place of tap water. While both waters are considered safe to drink, is either more beneficial in preventing tooth decay and is there a difference in purity? OBJECTIVE To determine the fluoride level and bacterial content of commercially bottled waters municipal tap water and to compare the results. DESIGN Comparative...

Water samples from 110 public wells in Ohio were analyzed for fluoride content using both an ion-specific electrode and a coIorimeter. In addition to the fluoride testing, analyses were performed on selected known interfering substances in the water. Sixty per cent of the samples differed by > 0.1 ppm fluoride with a mean difference of+ O. 14 ppm. Prescriptions for dietary fluoride supplementat...