It's just that it doesn't make any sense to take your teeth home after extraction. Why did you say you took the extracted tooth home? Maybe some melodramatic people said they would take it home as a souvenir. Of course, it's not impossible for you to do so, just a little naive. If every tooth is pulled out and taken home as a souvenir, there will be many teeth to take home when you are old and have pulled out so many teeth.
The extracted tooth is actually very dirty. Even if we stay in the hospital, the medical staff will throw them away, so don't worry about what people in the hospital will do with them. Moreover, almost all the extracted teeth are eaten by aphids, and all the extracted teeth are ugly and smelly rotten roots. A complete tooth is not necessary, let alone this rotten tooth. It won't be needed.
So, take the extracted tooth home, okay? Good and bad are personal will, and there is no good or bad of others. Without superstition, it would be unlucky to take it home. Just taking it home doesn't have any real effect. Some people may want to take it home as a souvenir. Of course, this is also possible. So whether the extracted teeth can be taken home depends on whether you really want to take them home.