Ah, I do see where my first post may have caused some confusion. Public water fluoridation is not the only source of fluoride that can be ingested and therefore contribute to causing fluoride-related health conditions; it seems I should have made that more clear for you. Fluoride is also added to other sources such as toothpaste, mouthwash, (I quote your source) "meat, fish, eggs, and tea leaves"; fluoride gels, fluoride supplements, et cetera; and in the case of gels, toothpaste and mouthwash, small amounts of fluoride actually are unintentionally ingested during usage. I assure you, I did not intentionally imply that public water supplies were the only source of fluoride ingestion. My position still stands, though, that public water supplies should not be fluoridated in the first place, and I also maintain that fluoride ingestion from fluoridated water alone causes several health conditions in and of itself (which I later made clear in my second post). I also did not imply that the fluoride in fluoridated water does not make contact with the teeth; the implications, rather, were that the contact of fluoride with teeth when ingested via fluoridated water is ineffective, or not effective enough, in providing any cosmetic dental benefit. Lastly, at the levels we are ingesting fluoride via public water fluoridation and other means, I certainly do believe it is poisonous to our bodies, and may have suggested that in particular in my first post (although not that it is pure poison). I certainly did not imply that fluoride does not have any other possible benefits in the human body when ingested, but even if it did have benefits, I strongly believe that the negative side effects far outweigh any potential benefits.
Onto the article you generously provided.
In response to fluoride being absorbed through the bloodstream, it is acknowledged by researchers that this method of fluoride treatment is not effective; topical fluoride treatment is the only method which benefits tooth health. Take a look at my source, which has plenty of research to back up its statements: (In fact, I'd be rather wary of your source when it has virtually no research sources listed, and whose primary purpose is news-related; not necessarily scientific, which is the appropriate type of source for this debate.)
 Originally Posted by Fluoride Action Network
When water fluoridation first began in the 1940s, dentists believed that fluoride's main benefit came from ingesting fluoride during the early years of life. This belief held sway for over 40 years.
However, it is now acknowledged by dental researchers to be incorrect. According to the Centers for Disease Control, fluoride's predominant effect is TOPICAL (direct contact with teeth) and not systemic (from ingestion).
Hence, there is no need to ingest fluoride to derive it's purported benefit for teeth.
As stated by the US Centers for Disease Control:
"[L]aboratory and epidemiologic research suggests that fluoride prevents dental caries predominately after eruption of the tooth into the mouth, and its actions primarily are topical for both adults and children" (CDC, 1999, MMWR 48: 933-940).
Notice the sources listed on the page I got that quote from. That's what we're shooting for here. Research sources.
Unless you can provide research sources showing evidence in favor of the claims made by your "source", your assertion that fluoride is effective for treatment of teeth when absorbed through the bloodstream remains invalid. Also, some of the parts you emphasized in your first quote didn't even help prove your bloodstream theory; it has already been made known that topical fluoride treatments are readily absorbed through the teeth. That doesn't back up your first assertion at all. I realize you might have been trying to make the point that topical fluoride treatment is effective in addition to fluoride ingestion, but all that does is imply that fluoride ingestion is in fact effective when in reality, you don't have research sources to back up that claim anyway. But yes, it is widely held that topical fluoride treatment is effective. 
Onto your second quotation.
Many governmental health agencies recommend that both children and adults receive some level of fluoride. Children need fluoride to protect their permanent teeth as they are forming. Adults need fluoride so that they can continue to protect teeth against tooth decay. Several groups of people could benefit especially from fluoride treatments because they have a higher risk of tooth decay.
Notice that the first sentence only states that some level of fluoride is recommended, and not by what means. In any case, I am sure government agencies recommend public water fluoridation since government is responsible for putting fluoride in our water in the first place. In response to that, water fluoridation is not the only means of, and is hardly the safest and most effective method of, treating individuals with fluoride. The rest of the quote is true from what I can tell, but does not necessarily prove your point since fluoride treatments do not have to come in the form of public water fluoridation when there are safer and more effective methods of fluoride treatments than via ingestion.
Onto your third quote.
When used properly, fluoride is usually considered a safe and effective tool to prevent tooth decay. However, high levels of fluoride exposure for extended periods of time may result in harm. For example, dental fluorosis - a discoloration of tooth enamel - may occur if a person is exposed to too much fluoride. In addition, it is possible for a lifetime of exposure to high fluoride levels to lead to bone weakening and skeletal fluorosis (joint stiffness and pain).
More extreme, toxic effects may result if someone consumes too much fluoride. Fluoride overdose is possible, for example, if a small child consumes an entire tube of tooth paste. Symptoms include nausea, vomiting blood, diarrhea, stomach pain, salivation, watery eyes, general weakness, shallow breathing, faintness, tiredness, and convulsions.
Yes, fluoride is considered a safe and effective tool to prevent tooth decay, but only when it is applied topically, and not when ingested, as I have shown. My response to the rest of the first paragraph is that, yes, there is too much fluoride in publicly fluoridated water, and that, yes, some of those conditions can be caused by consuming enough of it, especially when fluoride levels are raised from the harmful levels of 1 part per million to the dangerous levels of 4 parts per million, which has happened in some areas. That only proves that fluoride can be dangerous, which supports my position.
In response to the second paragraph, yes, since fluoride is a toxic substance, it is logical that if you consume large amounts of it, you are going to have some nasty side effects. That further proves how unsafe fluoride is when ingested.
Now, for the last section you quoted:
Several interest groups cite recent increases in dental fluorosis and fluoride levels in water that exceed optimal levels in calling for an end to fluoridated drinking water. They deem fluoride treatments unnecessary and less useful and more dangerous than originally thought.
It is mentioned that the amount of fluoride in fluoridated drinking water exceeds the deemed "optimal levels" (1 ppm), and that (I will assume here that "fluoride treatment" refers to water fluoridation) water fluoridation is now deemed to be unnecessary and "more dangerous than originally thought." This adds strength to my position that public water supplies should not be fluoridated, rather than support your position. What were you trying to prove by emphasizing the fact that fluoride levels have recently increased? What must really be brought to attention is the fact that your source mentions how dangerous and unnecessary water fluoridation actually is, in contrast to what was previously deemed to be a safe and effective treatment. I tip my hat to you for quoting information in favor of my position.
Your last post seemed to largely disprove your theory that water fluoridation is beneficial. Tell me, what are you trying to prove here?
Or are you simply grasping at straws?
Til next time,
-MindGames.
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