I thought this was an intellectual forum, and didn't realize I was only talking to people of a specific "side". In my opinion, one has to be a bit more unbiased when having a scientific discussion. When I say "Rumor" I mean statements from a biased source that may or may not be documented but lacks links to an external source.
For example, according to one website, there is little or no discernible difference between communities with water fluoridation, and communities without. However, I am not able to post the link in this forum yet.
They lack links to external sources, and it's possible that, even if correct, there are other important factors. For example, if levels were the same, but people in the Fluoridated communities stopped using mouth wash, I would then consider the results more significant. Likewise, if the people there did most of the drinking from bottled water, or from water softener systems, I would consider the results less significant. There are too many factors to consider to leave anything to one source.
In my question, I was very specific.
"Some say it is dangerous to consume, others say it is good to consume."
I wasn't questioning the topical effectiveness on the teeth. I don't think anyone on any side disputes that. I was questioning the impact it has INSIDE the body.
Also, other posters have said that you have to keep mouth wash in your mouth for a certain period of time to be effective. If that is true, then wouldn't using mouth wash be substantially more effective than drinking it? Also, isn't concentration of importance?