Why dont teeth grow back?

Why is it that bones in the body will heal but your teeth dont. Say i broke my arm, it would heal over time. But if i had a hole in a tooth it would never heal. Why is this?

Why dont teeth grow back?
I think that your teeth are made of a different substance then your bones, like teeth don't have marrow. Also, teeth have a thin layer of enamal to protect them, unlike bones, which have skin and muscles. Then we have baby teeth too, which just pop out after about 10 years. So I don't think that bones and teeth are the same thing, which would explain why they don't heal.
Reply:I've studies disproving that belief.
Reply:the bones will grow together. If you lose a tooth, it is gone. Just like if you lost a bone in your arm, it wouldn't grow back.
Reply:because it is connected and generates from a root. the root is killed with infection and decay. since the root is dead, it cant grow.
Reply:because your teeth bones are different then the rest of the bones in your body...they are still bones but they are different
Reply:It's very simple!!


Your teeth is external visible part of your body, apparently non-vital, invitee part, While your bones is inbuilt that will consisting of self-maintenance and corrective compulsive organism that will heal your bones, While teeth do not have any external apparent healing and maintaining organism that will support teeth for rectifications of problems or growth.





Because of That only Our teeth, if broken or fall down second time it will not grow-up third time.
Reply:Teeth have a live pulp, Just like a flower has a root. Once the root is dead the flower will now regrow and sprout again. It will eventually die. Just like your tooth, it also has a root that is live. Once it is dead the tooth has no nerve and is dead.



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