Yo...! That is the worst.

Tooth aches are a non-functional injury that takes you out.

Non-functional in the sense that if you slip a disk in your neck/back, or have an abdominal injury then you're immobilized.
Brain injuries also fall in this category, except they're worse.

You can physically walk around with a severe toothache, but your brain is disabled by the heavy weight of the swelling, and intermittently lanced with agony by the slightest movement.

If you were in the US I'd suggest staying home, cause healthcare cost billions.

I doubt many orthodontist are scheduling appointments, though.