Mould? In the bowl?
Shit man, I'd be real cautious and make absolutely, positively certain that the mould is completely eradicated.
You don't want to be inhaling anything nasty.
I'd fill the bowl with salt and alcohol, soak it for 24 hours . . . then set the thing on fire.
Well setting it on fire may be a bit over-the-top but a good soak with alcohol should do the trick.
Then leave it to dry for several days just to be certain that the mould wont grow back.
Looking forward to seeing the pics when it's ready to smoke.
Would not ever buy a pipe with tooth chatter. It would be a constant reminder that it had lingered in another blokes mouth.