I've heard that dietary flouride interacts with the body differently than topical.
Topical I believe is good for restoring tooth enamel in adults, which is why you get a shot or foam or varnish treatment when you go to the dentist. But the reason we flouridate water is apparently because developing children get much stronger teeth from dietary flouride. Why we push this on everyone instead of encouraging supplementation for children is beyond me, but this is my understand of different applications of flouride.
I havent seen fluoride treatment from dentists in forever now, having gone to three different ones in the last 20 years. And would refuse it. Its not even easy or cheap to get filters that filter out fluoride from water. If you swish it in your mouth your absorbing it and no way you aint swallowing some. This shit is outlawed in most country's.
I admit to being a bit of a conspiracy theory dude. But fluoride is a drug for the masses.
My take on it is that topical fluoride treatments are on the better side of cost/benefit, since they are done fairly infrequently and do strengthen teeth, while fluoride in the water is completely unnecessary (since it confers no benefit on adults) and probably more harmful than the spot treatments because of the prolonged and constant exposure. I'm not an expert on this, but that's my uninformed opinion.
edit: I'm not saying topical fluoride does no harm. It probably does some. But even cold medicine does harm in some measure. It's just a cost/benefit thing.
I came across this in my readings: http://fluoridealert.org/content/top_ten/
No. 3 in the list is fluoride dental treatments
Granted, this site is 100% anti-fluoride
3) Do NOT Get Fluoride Gel Treatments at the Dentist
Although dental researchers have stated on numerous occasions that fluoride gel treatment should ONLY be used for patients at highest risk of cavities, many dentists continue to apply fluoride gels irrespective of the patient’s cavity risk. The fluoride gel procedure requires the patient to clamp down on a tray for 4 minutes and uses an extremely concentrated, acidic fluoride gel (12,300 ppm). Because of the fluoride gel’s high acidity, the saliva glands produce a large amount of saliva during the treatment, which makes it extremely difficult (both for children and adults) to avoid swallowing the gel.Even when dentists use precautionary measures such as suction devices, children and adults still ingest significant quantities of the paste, which can cause incredibly high spikes of fluoride in the blood (for up to 15 hours). These fluoride levels place patients, particularly children, at risk for stomach pain, nausea and vomiting, and places a person at risk for short-term kidney damage, harm to the reproductive system, and impairment to glucose metabolism. The next time your dentist asks you whether you want a fluoride gel treatment, say NO.
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