نتایج جستجو برای: fluorosis
تعداد نتایج: 1317 فیلتر نتایج به سال:
Considering that blood fluoride concentration varies according to fluoride exposure and that dental fluorosis is related to the amount of enamel formed under a given fluoride dose, the present study investigated whether the fluorosis produced by an oscillating chronic fluoride dose would be similar to that caused by exposure to a constant dose, representing the mean of the oscillation during a ...
The review of this article is focusing on role of chemical nature of fluoride on human health and environment. Fluoride has both positive and negative effects on human health and environment. However this positive effect is felt when the fluoride concentration is low. At higher concentration the negative affects of fluoride far out way its positive effects. Millions of people all over the world...
OBJECTIVES To evaluate the effects of fluorosis and bleaching on shear bond strengths of orthodontic brackets. METHODS A total of 45 (30 fluorosed and 15 non-fluorosed) non-carious freshly extracted human permanent premolar teeth which were extracted for orthodontic reasons and without any caries or visible defects were used in this study. Fluorosed teeth were selected according to the modifi...
AIM Our aim was to test the hypothesis that co-exposure to lead and fluoride alter the severity of enamel fluorosis. MATERIALS AND METHODS Wistar rats were allocated in four groups: control, and 3 groups that received water containing 100 ppm of fluoride (F), 30 ppm of lead (Pb), or 100 ppm of F and 30 ppm of Pb (F+Pb) from the beginning of gestation. Enamel analysis and F and Pb determinatio...
OBJECTIVES The purpose of this study was to determine the prevalence and severity of dental fluorosis among patients attending basic health units in Londrina. METHODS Five basic health units of the urban area were randomly selected and 434 children attending these units, born between 1986 and 1989 (9 to 12 years of age), were examined. Diagnosis of dental fluorosis was performed by means of t...
Fluoride is one of the main contaminants in groundwater present naturally in many parts of the globe causing a set of human health symptoms known commonly as Fluorosis. India lies in the geographical belt with 225 districts of 19 States having high fluoride concentrations (> 1.5 mg/l) in groundwater. For many rural as well as urban areas in India, hand-pumps and tube-wells are the only source o...
Introduction: Dental fluorosis is a condition which occurs due to exposure fluoride than required.The begins at the first eight years of life leads an eruption discolored teeth with stains from yellow dark brown, surface irregularities and noticeable pit. It can be treated by whitening, composite bonding Porcelain veneers. Aim: To determine knowledge, attitude practice on management among denta...
background and aims. the aim of the present study was to systematically review fluoride concentration of drinking waters and prevalence of fluorosis in iran through systematically evaluating results of studies conducted in this regard. materials and methods. in this systematic review study, the required data was collected using keywords including drinking water fluoride, fluoride concentration,...
Too much consumption of fluoride during tooth formation causes the disorder known as dental fluorosis, leading to changes in their appearance and structure. The severity fluorosis is typically classified into different stages based on visual teeth. Mild cases may not require any treatment, condition improve over time enamel continues mineralize. In more severe cases, treatment options include t...
BACKGROUND Fluoride is a double edged sword. The assessment of dental caries and fluorosis in endemic fluoride areas will facilitate in assessing the relation between fluoride concentrations in water with dental caries, dental fluorosis simultaneously. AIM The objective of the following study is to assess the dental caries and dental fluorosis prevalence among 12 and 15-year-old school childr...
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