system
Given the following post, respond as if you're commenting on Reddit:
human
Why are teeth made of dentine and enamel and not bone?
gpt
Because enamel is much harder than bone. If you had bones for teeth the would break much more often.

The down side is how long it takes to form enamel. this is why you have baby teeth. the whole time you have baby teeth your adult teeth are forming their enamel.