نتایج جستجو برای: fluoride in water

تعداد نتایج: 17085027  

Journal: :The Journal of the Dental Association of South Africa = Die Tydskrif van die Tandheelkundige Vereniging van Suid-Afrika 1971
F H Barbakow A C De Kock D H Retief

THE caries inhibitory effect of fluoride is well documented (Brudevold et a], 1967; Horowitz and Heifetz, 1970). •As the initial site of the caries lesion Occurs on the surface of the tooth at the plaque/tooth interface, the fluoride con­ centration in the surface layers of enamel is important in combating the carious process (Isaac et al, 1958; Naylor, 1969). The fluoride in the enamel is deri...

2016
Giti Akhavan Sina Dobaradaran Jaleh Mohajeri Borazjani

In the present data article, fluoride concentration levels of drinking water (with spring or groundwater sources) in 10 villages of Asara area located in Alborz province were determined by the standard SPADNS method using a spectrophotometer (DR/2000 Spectrophotometer, USA). Daily fluoride intakes were also calculated based on daily drinking water consumption. The fluoride content were compared...

2009
Stefanie Vandevijvere Benoit Horion Michel Fondu Marie-Josée Mozin Michèle Ulens Inge Huybrechts Herman van Oyen Alfred Noirfalise

There is a tendency to align higher levels of fluoride in natural mineral water with the existing higher levels in tap water. Treatment of natural mineral waters could harm the preservation of their natural character. In this study fluoride intake through bottled and tap water consumption in the Belgian adult population was assessed, taking into account regional differences. A deterministic app...

Journal: :The international journal of occupational and environmental medicine 2012
I Si Ogbu O Io Okoro E I Ugwuja

Abnormal fluoride levels in drinking water have been associated with adverse health effects. To determine the fluoride content of well waters in Enugu, southeastern Nigeria, water samples from 50 artisan wells chosen by multistage sampling procedure from the 5 zones of Enugu municipality were analyzed in duplicates for their fluoride content. The zonal mean values were 0.60, 0.70, 0.62, 0.62, a...

2016
V. D. Suryawanshi R. K. Pardeshi P. B. Deshmukh

Fresh water crab was exposed in fluoride water at 96h the rate of oxygen uptake was higher in gills followed by hepatopancreas and muscle. On exposure to fluoride water, tissue respiratory rates decreased, effect on gill tissue appeared to be more pronounced than other tissues under the study. The rate of oxygen uptake in male was higher tha control animal. Rate of oxygen consumption showed a s...

2015
Anamika Srivastava Minaxi Lohani

The purpose of this review is to describe various geological and chemical factors that are controlling the fluoride concentration in soil, rocks, water, air, plants, animals and food stuffs. Further to discuss well established method that is used as the standard methods of analysis. Rock, Soil, Water, air, plants, animals, foodstuffs all contain fluoride in widely varied concentration. Industri...

2017
Farzaneh Baghal Asghari Ali Akbar Mohammadi Zahra Aboosaedi Mehdi Yaseri Mahmood Yousefi

The aim of this study was to determine the concentration of fluoride in drinking water, the distribution system, in 22 villages in Shout (A city in West Azerbaijan province). Sampling of springs and underground water was carried out in two warm and cold seasons. Fluoride concentration were determined through spectrophotometer with a model, DR/5000.The fluoride concentration were compared with I...

ژورنال: سلامت و محیط زیست 2012
حسین‌پور فیضی, محمدعلی, دستگیری, سعید, مسافری, محمد, مهدی‌پور, معصومه, کوشا, احمد,

MicrosoftInternetExplorer4 Background and Objectives: Intake of high concentrations of fluoride in drinking water can cause dental fluorosis. In this study, the prevalence of dental fluorosis in rural communities of East Azerbaijan Province was studied. Materials and Methods: 3 villages of Bashsizkooh, Bostanabad (fluoride concentration in drinking water = 0.12 mg/L), Nagharehkub,  Ahar ...

Background: Fluoride (F&minus) is a trace element that is incorporated into bone mineral during bone formation. This study assessed the effect of increasing Fluoride doses on the bone formation and microarchitecture on the Femur of rats by histological, and histometrical methods. Materials and Methods: A total of 16 rats was divided into one group of control and three groups of animals that re...

2013
Shaoxian Chen Boling Li Shao Lin Yixiang Huang Xinhua Zhao Min Zhang Yuan Xia Xiaoheng Fang Junyi Wang Syni-An Hwang Shouyi Yu

BACKGROUND Few studies have evaluated health impacts, especially biomarker changes, following implementation of a new environmental policy. This study examined changes in water fluoride, urinary fluoride (UF), and bone metabolism indicators in children after supplying low fluoride public water in endemic fluorosis areas of Southern China. We also assessed the relationship between UF and serum o...

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