Any ideas for using teeth in spells?

I have wisdom teeth that I’ve been saving since like 2010 that I just now realized I could use in witchcraft. They are, however, mine, so I have to be careful how I use them, so I’m trying to drum up ideas. So far I have:

• A “biting” curse (puns aside it’d be safe to use my own teeth to figuratively “bite”)
• “Sweet enough to give you cavities” curse (which would be best to use someone else’s for because it’d involve using them kind of like a poppet)

Any ideas? I can’t come up with any that aren’t curses, though I’d be okay with more of those