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Fluoride in Your Water: The Great Debate

You've heard of fluoride from your dentist - fluoride toothpaste, mouthwash, and even tonic. But do you know what fluoride is?
Fluoride naturally exists in water (rivers, lakes, streams and oceans) and many foods (such as grapes and tea). It is also added to certain processed grains and baby formulas. This mineral has a great benefit: it protects your teeth from bacteria and sugars on your teeth and around your mouth when you're finished eating, preventing tooth enamel from being eroded and forming cavities.
In fact, there is evidence that fluoride not only prevents cavities, but also can be restored by strengthening remineralization and repairing the enamel that has begun to decay. That's why the American dental association (ADA) and most dentists using dental handpiece think that a small amount of fluoride should be added to the water supply so that everyone can get enough.
'the scientific evidence is very clear,' said Howard Pollick, a professor of prevention and rehabilitation of dentistry at the university of California, San Francisco, who is a spokesman for the American dental Association. "Fluoride can help prevent tooth decay," he said.
Others, however, argue that adding fluoride to water supplies is unnecessary and dangerous. A recent government study found that about a fifth of teenagers suffer from dental fluorosis - white spots and stripes on their teeth - too much fluoride.
A brief history of fluoride
January 25, 1945, grand rapids, Michigan. It was the first country to add fluoride to municipal water supply systems. Studies have shown that if children live with more fluoride, their cavities are reduced. Today, nearly three-quarters of americans live in communities that have fluoride supplies.
Many communities contain less than three parts per million of fluoride, according to Dr. Pollack, below the standard recommended by public health officials in the United States to prevent cavities.
Now, however, of fluoride in toothpaste, mouthwash
Government health officials recently acknowledged this lifestyle change and lowered the recommended level of water fluoride. In January, the U.S. Department of Health and Human Services and the U.S. environmental protection agency (EPA) recommended that fluoride content in drinking water be set at 0.7 mg per liter of water. Their previous recommendations were 0.7 to 1.2 milligrams.
Nevertheless, polly, 'said studies have shown that the benefits of fluorination than risk, and through the water fluoride treatment, children from poor families at least the fluoride intake, because they don't have much dental care service. He says dental fluorosis is primarily a cosmetic problem that can be dealt with, and there is no evidence that fluoride reactions can cause cancer risk, as some activists claim.
"We have confidence," said Pollick, who worked on the epd team and suggested that changing "water fluoride is safe and a cost-effective way to achieve the entire community."
The reaction against fluoride
Although the American dental association support fluorination reaction, but critics say any of fluoride is added to the water too much - the claim that it will make people in danger of being adverse health conditions, including fractures, brain damage and cancer.
"Water fluoride is not safe," said Dr. Kathleen Thiessen of the risk analysis center at SENES Oak Ridge inc., in Tennessee. "In the United States, even if the recently recommended levels of fluoride are low, people will be exposed to levels above or above the level associated with high levels of adverse health effects."
Bill Osmunson,DDS, MPH, an ordinary dentist, in bellevue, wash. He says dental fluorosis is more than just a "beauty problem", and the cost of treatment can be high. "Some patients need to spend between $20,000 and $30,000 to fix dental equipment," he said. "it won't last forever."
According to Dr. Osmunson's study, excessive fluoride can lead to bone fractures, kidney damage, thyroid problems, heart disease, brain damage and cancer. Osmunson says the number of dental caries that are seen in the areas where the water is fluorized and where there is no water has not changed. So, he asks, why put people at risk?
But according to a study by the national cancer institute, many studies have shown that the evidence of fluoride exposure in humans and animals suggests there is no link between fluoride water and cancer risk. Excessive fluoride adults have been shown to have the potential to develop a painful bone called bone fluorosis, but fluoride levels found in the United States are very rare.
ADA's bottom line
Under the americans with disabilities act, the fluorine content in the new proposal should provide an effective fluoride level, it will continue to reduce the number of children and adults of all age and income caries incidence, at the same time reduce the incidence rate of dental fluorosis.
If you're worried about fluoride and want to avoid fluoride poisoning, talk to your dentist.

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