From my understanding, that is correct. The bacteria in your mouth will turn parts of the food in acids, weakening the protective layers of the tooth. Thus, brushing your teeth directly after eating will be more abrasive. I don't remember the time, but it was advised to wait some time, so the saliva can neutralize and remineralize the teeth.

[–] lvxferre@mander.xyz 4 points 21 hours ago (1 children)

I've seen people raising the opposite argument: brush it ASAP so the bacteria don't have time to acidify your mouth. Now I'm really unsure which is the right approach.

[–] NABDad@lemmy.world 6 points 19 hours ago

Clearly the correct answer is to brush your teeth while you're eating breakfast.

Chew, swallow, brush. Chew, swallow, brush.