نتایج جستجو برای: fluoride of water
تعداد نتایج: 21220042 فیلتر نتایج به سال:
Fluorides are found in the waste discharges from process streams in a number of industries. Significant amounts of fluoride come from the following industries: semiconductor, photovoltaic, glass manufacturers, electroplating, steel and aluminum, pesticides and fertilizer. The fluoride concentration in untreated effluent can vary over a large range, and the allowable level for discharge depends ...
s Three Restorative Materials and Topical Fluoride Gels used in Xerostomic Patients. A Clinical Comparison. Comparison of Two Commercially Available Chlorhexidine Mouth Rinses. The Effectiveness of Two Different Battery-Powered Toothbrushes on Whitening Through Removal of Stain. Frequently Asked Questions Ultrasonic Scaler Metal Prophy Angle Sensitive Teeth Treating Cancer Patients Bad Breath D...
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−) 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 received...
Implementing a geographical information system to assess endemic fluoride areas in Lamphun, Thailand
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, ...
Seven hundred eight patients aged 5-19 years in a pediatric practice in North Carolina were selected using a random-start, systematic sampling procedure and enrolled in a case control study to determine risks for fluorosis. Subjects were examined by four trained examiners using the Tooth Surface Index of Fluorosis (TSIF). Information on fluoride exposures and other explanatory variables was obt...
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...
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...
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...
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...
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