evolution

I was wondering why would it be fit evolutionary speaking for ameloblasts to be lost as the tooth emerges into the oral cavity. Wouldn't it be beneficiary to not render the enamel a non vital tissue and therefore would give regeneration to the enamel.

Hey, everyone. New member and first time poster here. I'm going to start my applications for PhDs in psychology this fall and I've been constantly looking at schools and people. I was originally planning on neuropsychology or something with an emphasis on biology, but looking through the papers...