Eli5: why is when a bone shatters it can rebuild itself but when a tooth gets a hole in it it just keeps eating away at it
In: Biology
Skeletal bones are like a huge urban city that’s filled with all manner of busybodies. When something goes wrong, someone (cells) is there to fix things and they have a good supply of building material (nutrition and minerals) to do it. Teeth are like a bunch of small villages at the outermost edge of the country. Sure, people live there. But they aren’t as well populated and supplied as their inner city friends. They can’t do a lot and get by with what little they have.
*Tried to simplify things as much as possible based on my rudimentary understanding.
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