gregjohn wrote:
> What would happen if you had diamond-paste toothpaste and black hole teeth?
> 
> (I encouraged him to modify the question to a more realistic one of "neutron
> star material" teeth).
> 
Consulting wikipedia for the density of neutron stars... Apparently the 
crust has a very low density so teeth made from superficial material 
might weigh only 100kg or so each. But they could weight a billion times 
more than that.
I don't think that you could make a scratch in neutron star material, 
not even with diamond, if that is the question.

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