why do we have baby and adult teeth?? not teen teeth? or elderly teeth? not just one set?? why do we specifically have

Question: why do we have baby and adult teeth?? not teen teeth? or elderly teeth? not just one set?? why do we specifically have baby and adult teeth? whats with all the teeth?!
- Keywords:
  food,
  human body,
  teeth
Asked by ava and hibba!! on 10 Apr 2025.
- Kirsty Ross answered on 10 Apr 2025:
  
  Basically, when we are embryos we have two layers of tissue that go on to form the baby teeth, followed by the adult teeth. This tissue breaks down in humans after our second set are formed, which is why we don’t continually replace our teeth over time like other animals. Here is a good article about it: https://theconversation.com/why-do-humans-grow-two-sets-of-teeth-these-marsupials-are-rewriting-the-story-of-dental-evolution-189796

Question: why do we have baby and adult teeth?? not teen teeth? or elderly teeth? not just one set?? why do we specifically have baby and adult teeth? whats with all the teeth?!