That sounds miserable and desperate. A couple of dollars worth of scrap shavings. What will you do with that? Just let them have it.
[1] https://thegoldcenter.com/how-much-gold-is-in-a-dental-crown... [2] https://www.macrotrends.net/1333/historical-gold-prices-100-...
These people buy millions per day in gold, I’m sure if it was profitable they wouldn’t turn it away.
You can try it though, go to all the gold stores in your area and tell them you’ll buy all the teeth they bring in.