this post was submitted on 02 Nov 2026
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[–] chunes@lemmy.world 77 points 10 hours ago (7 children)

Not too long ago I learned that you're not supposed to rinse your mouth out after brushing your teeth, but instead just spit out the toothpaste. Apparently you're supposed to leave a coating of it on your teeth for it to work properly.

[–] chlofie@eviltoast.org 2 points 3 hours ago

My dental hygienist recently said that if you vomit you're not supposed to brush your teeth right away. You're supposed to rinse your mouth out with water to balance the pH levels and after a little while then you can brush.

[–] Cricket@lemmy.zip 38 points 9 hours ago* (last edited 9 hours ago) (5 children)

Where did you learn this? I've never heard this recommendation before and it sounds pretty out there.

Edit: it turns out that apparently both the American Dental Association and the National Health Service of the UK recommend not rinsing immediately after brushing. Huh, TIL.

[–] someguy3@lemmy.world 3 points 3 hours ago (1 children)

I noticed a big decrease in plaque after I stopped rinsing.

[–] Cricket@lemmy.zip 1 points 3 hours ago

That would be a great result that I look forward to.

[–] IronKrill@lemmy.ca 3 points 4 hours ago (1 children)

I heard it straight from my Dentist (in Canada) just this last month. I was also blown away, been rinsing for decades...

[–] Cricket@lemmy.zip 2 points 3 hours ago

Same here. I'm glad your dentist told you though.

[–] NeatNit@discuss.tchncs.de 2 points 5 hours ago

I'm not them, but I first heard this in one of the early episodes of A Problem Squared podcast. Edutainment, baby!

[–] roofuskit@lemmy.world 20 points 9 hours ago (1 children)

The flouride in toothpaste doesn't work if you rinse it off immediately. You should not eat or drink for at least 30 minutes after brushing.

[–] Cricket@lemmy.zip 1 points 9 hours ago

Got it, thanks, I've updated my comment.

[–] Xenny@lemmy.world 7 points 9 hours ago (1 children)

It makes sense if you think about it. The flouride needs to rest on your teeth to harden them properly.

[–] Cricket@lemmy.zip 2 points 9 hours ago* (last edited 9 hours ago)

I've updated my comment. I wouldn't have intuitively thought about this because why would I think that it would take time for Fluoride to take effect, or that whatever is left after rinsing wouldn't do the job? Thanks.

[–] spankysalmon@fedinsfw.app 2 points 5 hours ago

Still plenty of toothpastes without fluoride.

[–] Dave@lemmy.nz 11 points 9 hours ago (1 children)

Toothpaste instructions often tell you to rinse with a small amount of water, but dentists here always say not to.

And floss before brushing, so you can rinse goop out before the toothpaste goes in.

[–] malios@lemmy.world 7 points 7 hours ago (2 children)

I have the same logic about flossing personally, but I've asked my dentist/dental hygenist multiple times and they've all said the order for flossing doesn't matter.

[–] Duallight@lemmy.today 9 points 6 hours ago

My dentist has also said the order doesn't matter. My guess is that the benefits of flossing at all outweigh any small benefits from doing it in a specific order. I'm also assuming most dentists are just happy if you floss and don't want to nitpick on technique unless it's causing issues.

[–] mrgoosmoos@lemmy.ca 1 points 4 hours ago

it's more about practicalilty. when in flossing, stuff might get loosened but still be partially stuck in my wire, or just stick to be back of my teeth

if I floss first, I can just go straight to brushing and not have to get that little piece unstuck separately

this really helps to optimize my time efficiency in my life, allowing me precious more seconds to doomscroll

[–] MnemonicBump@lemmy.dbzer0.com 2 points 10 hours ago

I'm flabbergasted