Unless you have a lot, you probably won’t get close to spot price. You might be able to find some local artisans that will pay better for small amounts then the big houses will. Gold in stamped form has the greatest value. Nuggets or mined gold, some buyers are afraid of and won’t pay until it’s melted.
They are just generally gross, a lot of them aren’t cleaned(which can also smell), apparently they explode when heated, it’s hard to gauge the purity and weight of the gold until you remove the tooth. Lots of issues.
Gold teeth are worth the absolute least.