Does Superman brush his teeth?

[LordUltimus]

I mean, they should be as invulnerable as the rest of him, so does he need to?

[The World]

Probably. Even if his teeth are resistant to most bacteria there is still some that cause bad breath.

[qwertyuiop1998]

Considering he will shave his beard, He probably will brush his teeth too

[Dispenser Of Truth]

He would probably vaporize all the bacteria in his mouth when moving at super-speed, but I imagine he'd still keep with it as a habit from childhood, especially if there was a flavor he liked. At minimum he'd still keep a toothbrush and toothpaste and floss in his apartment in case of visitors.

[seismic-2]

He needs to clean out all those bugs that collect between his teeth as he flies across the world at super-speed. Feathers, too.

[Kuwagaton]

My nerdiest answer to a question ever: Although his body wouldn't give off or retain elements that make hygiene necessary, not smelling hygienic would be kind of weird. So we always see him shower, sometimes shaving, and I have to imagine brushing is part of all that.