Our bones heal naturally when broken, at least to some extent, so why is it not the same with teeth, which are arguably more useful?
Even the tooth regrowing drug developed recently will be first tested on humans with congenitally missing tooth, not those who lost their teeth later in life, at least from what I understand, which means there’s no *re*growing anything.
Will it ever be possible to fully regrow a tooth and have it be just like the one you lost?
In: Biology
Not an expert, but from what I understand your teeth start out with special cells osteoblasts (cells that create bone tissue) and osteoclasts (cells that break down bone tissue)
Before your teeth erupt from your gums, those cells are doing their thing in the jaw bone, forming the teeth from a template
Once they are finished, they die off due to genetic coding, leaving just the bone material and the inner nerves (pulp) inside
Without those specialized cells there is nothing to remove/recycle the dead and damaged tissue (osteoclasts) and nothing to reform it using that material (osteoblasts)
Those two types of cells are present in your bones too, that is what allows them to heal while being ossified (stone-like)
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