This is interesting. Teeth are of pretermined shape and size to fit the jaw, or the jaw the teeth "assume" will be there. The jaw's shape and size is determined by what/how you eat. For humans with a "traditional" diet, that assumption is correct. For us, it isn't.
This is very specific to humans though, and the specific problem of "overcrowded" mouths. But teeth have other issues, and in other species too. For many animals, teeth are the thing that fails at old age effectively capping lifespan.
This is very specific to humans though, and the specific problem of "overcrowded" mouths. But teeth have other issues, and in other species too. For many animals, teeth are the thing that fails at old age effectively capping lifespan.