system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When and how did gold teeth become used in dental work? Arent there more practical things that could be used?
gpt
Gold is unreactive. 

The last thing you want is your tooth to rust or dissolve. Gold is so unreactive it doesn't even have a flavour.

It's also valuable so can be seen as a display of wealth. 

There are more practical things, and they're generally what your dentist will use today. Silver amalgams, plastic, ceramic or special types of glass are used today for fillings and dentures.