I was under the impression that in general you want Fluoride to be topically applied to teeth, and not swallowed. Perhaps I was misinformed.
stubish · 7h ago
Fluoride topically applied to teeth is to put back fluoride that has been leeched out of the enamel. Swallowed fluoride is needed to make the enamel in the first place. I'm not sure how helpful it is to adults, but kids certainly need it.
didgeoridoo · 4h ago
This is completely incorrect. Fluoride is not a component of native enamel, nor is it recognized as an essential nutrient in any way.
Topically-applied fluoride converts hydroxyapatite in enamel into hydroxyfluorapatite, a harder substance that resists bacterial decay. It has no benefits for the rest of your body, and when intake becomes excessive it can interfere with skeletal development and cause brittle bones.
Fluoride belongs on your teeth, not in your stomach.
hinkley · 3h ago
Fluoride on teeth is a bit like making gorilla glass - infusing atoms into a surface with different bond strengths and lengths to make a material that’s more durable than the original.
didgeoridoo · 3h ago
I guess you could think of both as “alloys”, but with ionic bonds instead of metallic bonds.
I’m sure there are at least six ways this isn’t quite accurate, but it’s an interesting analogy at least.
You're the one who is incorrect here. We do, in fact, consume fluoride all the time in the food we eat and it has a role in bone and tooth health. The vast majority of people get more than enough in their regular diet (brewed tea has a fair amount) but there are probably extreme cases where a supplement might be required. Banning them is dumb and confidently posting about things you don't know for sure is worse.
didgeoridoo · 3h ago
Confidently posting links without reading or understanding them is worst of all. Your source does not remotely contradict my point. This says that, while we harmlessly consume incidental fluorine from the environment all the time, there is no recommended or minimum intake. That’s because it is not an essential nutrient. Its only use mentioned here is the prevention of dental caries, and then only when applied topically.
There is no such thing as “enough” consumed fluorine. Consuming fluorine bypasses your teeth, the only place it does any good. Enamel is not generated with fluorine in it; it must be applied afterward for anticavity benefits.
amluto · 2h ago
Do you have a credible source?
There appear to be multiple sources stating that mild fluorosis is associated with increased resistance to cavities, e.g. [0], which seems inconsistent with your statement.
Flashback to a few weeks ago when RFK's anti-water-floridation stance was once again in the news and countless people were ready to go to bat for him: "No, he's just removing the mandatory health experiment of fluoride in the water. If you want to go out and get fluoride supplements nobody will stop you".
Give it a few more weeks, and it will be banned from toothpastes too.
ryandrake · 1h ago
And then the goal posts will move again and people will defend it: “Well at least he’s not trying to ban toothpaste itself! Get a grip, libs!”
And then when he bans toothpaste: “You can get the topical treatment and a cleaning from the dentist if you want it so badly. Stop worrying so much!”
And then when he bans the topical treatment at the dentist: “It’s a logical move. Look, it’s not like he’s jailing dentists. You can still waste your money visiting your dentist if you think it’s going to help your teeth, LOL!”
Alifatisk · 9h ago
Had to look this up because I got the impression that they banned flouride for toothpaste and mouthwash too, this is not the case obviously. The recent FDA move targets prescription fluoride supplements that are swallowed, such as tablets and drops.
reginald78 · 2h ago
I see no reason to ban those even if you have strong reservations about fluoride in the water supply. Since this administration rarely functions on logic I expect they'll move to banning the toothpaste, mouthwash and the topical treatments in dental offices since this will be treated more like some kind of vindictive holy war rather than an attempt to improve public health in any rational manner.
hinkley · 3h ago
There are disorders where fluoride has collected in your bones and from what I understand that’s not only not a good idea but also fairly painful.
fazeirony · 3h ago
we moved to a rural area in 2005 with clean, but unfluoridated well water. had a son. brushes twice daily for 2 minutes a time like everyone else in the house.
he had an excessive amount of cavities and the dentist did not use any supplementation. This was painful and unnecessary for my son (we stopped using that dentist when it was clear this isn't 'normal').
i realize this is n=1. but apparently calgary [0] also realized this was having an opposite effect as well. (yes i realize this is slightly different than supplementation in the parent article but the supplementation would have saved my kid from unnecessary cavities.)
It feels as though we are on the path toward the government endorsing essential oils, homeopathy, psychics and Ouija Boards. All because one person perceives “science” as a political opponent.
I have little doubt that by the time this is over, they’ll be teaching public school kids that WiFi causes cancer, the earth is flat, psychic powers work, vibrating crystals can cure diseases, the moon landings were fake, and professional wrestling is real.
I actually miss the GOP of the 90s, who just wanted to teach that the Earth was 6000 years old and that Jesus rode dinosaurs.
gblargg · 4h ago
Do you feel the same way about European countries who don't add fluoride to water? Do you think we should consume shampoo and soap because it's beneficial when used topically?
aegypti · 1h ago
…yes?
That exact strain of provincial European quackiness is how you get homeopathy and alternative medicines covered under public health insurance and paid for by tax dollars in Germany, Switzerland, Sweden, etc.
At least France grappled with it ~5 years ago and removed it IIRC. Still being debated in Germany.
Slippery slope.
AStonesThrow · 16m ago
> how you get homeopathy
Flouridating water supplies is more or less literally homeopathy!
glowiefedposter · 4h ago
bootlicking only if they are coated in fluoride
parineum · 8h ago
Is that person RFK because it isn't Trump. Trump doesn't give a shit about science, he cares about support. That's why Democrat castoffs (RFK after being antivax was no longer a left wing position and Gabbard for having the audacity to oppose the Clinton machine) found a home under his tent.
Politically, those were great moves. He was able to pull outsider figures from the center-left away from the party that had tripled down on party loyalists.
watwut · 8h ago
RFK is not Democrat in any reasonable sense and wasn't for years. RFK is literally Secretary of Health and Human Services appointed by Trump.
And RFK is perfectly matching the rest of Trumps and republican party policies regardless where you look.
Topically-applied fluoride converts hydroxyapatite in enamel into hydroxyfluorapatite, a harder substance that resists bacterial decay. It has no benefits for the rest of your body, and when intake becomes excessive it can interfere with skeletal development and cause brittle bones.
Fluoride belongs on your teeth, not in your stomach.
I’m sure there are at least six ways this isn’t quite accurate, but it’s an interesting analogy at least.
You're the one who is incorrect here. We do, in fact, consume fluoride all the time in the food we eat and it has a role in bone and tooth health. The vast majority of people get more than enough in their regular diet (brewed tea has a fair amount) but there are probably extreme cases where a supplement might be required. Banning them is dumb and confidently posting about things you don't know for sure is worse.
There is no such thing as “enough” consumed fluorine. Consuming fluorine bypasses your teeth, the only place it does any good. Enamel is not generated with fluorine in it; it must be applied afterward for anticavity benefits.
There appear to be multiple sources stating that mild fluorosis is associated with increased resistance to cavities, e.g. [0], which seems inconsistent with your statement.
[0] https://www.ncbi.nlm.nih.gov/sites/books/NBK585039/
No comments yet
Give it a few more weeks, and it will be banned from toothpastes too.
And then when he bans toothpaste: “You can get the topical treatment and a cleaning from the dentist if you want it so badly. Stop worrying so much!”
And then when he bans the topical treatment at the dentist: “It’s a logical move. Look, it’s not like he’s jailing dentists. You can still waste your money visiting your dentist if you think it’s going to help your teeth, LOL!”
he had an excessive amount of cavities and the dentist did not use any supplementation. This was painful and unnecessary for my son (we stopped using that dentist when it was clear this isn't 'normal').
i realize this is n=1. but apparently calgary [0] also realized this was having an opposite effect as well. (yes i realize this is slightly different than supplementation in the parent article but the supplementation would have saved my kid from unnecessary cavities.)
[0] https://www.npr.org/2024/12/13/nx-s1-5224138/calgary-removed...
EDIT: clarity on 'supplementation'
Statewide fluoride ban for tap water passes in Florida
https://news.ycombinator.com/item?id=43843547
I actually miss the GOP of the 90s, who just wanted to teach that the Earth was 6000 years old and that Jesus rode dinosaurs.
That exact strain of provincial European quackiness is how you get homeopathy and alternative medicines covered under public health insurance and paid for by tax dollars in Germany, Switzerland, Sweden, etc.
At least France grappled with it ~5 years ago and removed it IIRC. Still being debated in Germany.
Slippery slope.
Flouridating water supplies is more or less literally homeopathy!
Politically, those were great moves. He was able to pull outsider figures from the center-left away from the party that had tripled down on party loyalists.
And RFK is perfectly matching the rest of Trumps and republican party policies regardless where you look.