Search results
Results From The WOW.Com Content Network
Fluoride's suppressive effect on the thyroid is more severe when iodine is deficient, and fluoride is associated with lower levels of iodine. [clarification needed] [31] Thyroid effects in humans were associated with fluoride levels 0.05–0.13 mg/kg/day when iodine intake was adequate and 0.01–0.03 mg/kg/day when iodine intake was inadequate.
Experts noted prenatal fluoride exposure is most strongly linked to children’s IQ loss, and said timing of fluoride consumption might need to be considered when making recommendations.A federal ...
Symptoms of HF exposure include irritation of the eyes, skin, nose, and throat; eye and skin burns; and bone damage. [3] Complications may occur due to fluoride toxicity. [1] Once absorbed into blood through the skin, [1] it reacts with blood calcium and may cause cardiac arrest.
Soluble fluoride salts, of which sodium fluoride is the most common, are toxic, and have resulted in both accidental and self-inflicted deaths from acute poisoning. [4] The lethal dose for most adult humans is estimated at 5 to 10 g (which is equivalent to 32 to 64 mg elemental fluoride per kg body weight).
The fluoride ion is readily absorbed by the stomach and intestines. Ingested fluoride forms hydrofluoric acid in the stomach. In this form, fluoride crosses cell membranes and then binds with calcium and interferes with various enzymes. Fluoride is excreted through urine. Fluoride exposure limits are based on urine testing, which is used to ...
Beryllium poisoning is poisoning by the toxic effects of beryllium, or more usually its compounds. It takes two forms: Acute beryllium poisoning, usually as a result of exposure to soluble beryllium salts; Chronic beryllium disease (CBD) or berylliosis, usually as a result of long-term exposure to beryllium oxide usually caused by inhalation.
Fluoride or fluorine deficiency is a disorder which may cause increased dental caries [1] and possibly osteoporosis, [2] [3] due to a lack of fluoride in diet. [4] [5] Common dietary sources of fluoride include tea, grape juice, wine, raisins, some seafood, coffee, and tap water that has been fluoridated. [6]
Fluoride varnish is a resin-based application that is designed to stay on the surface of the teeth for several hours. As this varnish rests on the tooth's surface, saliva dissolves the fluoride salt, which in turn allows fluoride ions to be released and absorbed by the teeth and soft tissues. [36]