How do I get the teeth?

Hint 1 of 6:

Well, that guy under the bed probably won't need them.

Hint 2 of 6:

Lure him out.

Hint 3 of 6:

Goto the Insane Ward.

Hint 4 of 6:

Give the glass eye (from the Taxidermist) to the guy reading the book.

Hint 5 of 6:

Talk to him, and get the book.