I just pulled this out from my ass, but I would guess yes, they do. But you rinse your mouth after brushing your teeth so I would guess it's not that bad? Since you're (mostly) not ingesting the microplastic particles from the toothbrush. But again I'm going off of nothing.

[–] iheartneopets@lemm.ee 15 points 9 months ago (3 children)

Current advice is actually to not rinse after brushing, as you're meant to let the fluoride of the toothpaste sit against your teeth for thirty minutes.

Unfortunately, I would recommend not losing sleep over either source of microplastics (chewing gum or toothbrushes), until tires and synthetic clothing are done away with by society. Those are much MUCH bigger, inescapable sources of microplastics

[–] CitizenKong@lemmy.world 9 points 9 months ago (2 children)

Isn't it mostly tires? Which is just another reason humanity has to be cured of this insane car-craziness.

[–] iheartneopets@lemm.ee 5 points 9 months ago

Tires are there biggest ones, yeah, but number two is shedding from synthetic clothing creation and laundering

[–] BeMoreCareful@lemmy.world 3 points 9 months ago (1 children)

I think micro plastics are in all the water everywhere.

[–] iheartneopets@lemm.ee 3 points 9 months ago* (last edited 9 months ago)

We're talking about their major sources, not where they're now consequently found

[–] Ledericas@lemm.ee 1 points 9 months ago* (last edited 9 months ago)

yea i heard that trick too, unfortunately it can cause perioral dermatitis in people, especially some toothpastes. because it tends to seep out of your lips and sits in the corner irritating the lips.

[–] Aggravationstation@feddit.uk 2 points 9 months ago (1 children)

Instructions unclear, pulled toothbrush out of ass.

[–] Vandals_handle@lemmy.world 1 points 9 months ago

Are you a sea cucumber?