Title: ELI5:If teeth, hair and nails are made of the same thing, why do teeth not grow back if broken? : explainlikeimfive
Headings: ELI5:If teeth, hair and nails are made of the same thing, why do teeth not grow back if broken?
ELI5:If teeth, hair and nails are made of the same thing, why do teeth not grow back if broken?
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Content: Nails and hair are much simpler and grow continually. level 1
pocketpotato
2 points · 6 years ago
If they where that would be a good question
level 1
bobsbountifulburgers
2 points · 6 years ago
While nails, hair and skin all have keratin (a type of protein) in them, I'm almost certain that it does not make up a significant portion of teeth. Teeth are made up of different kinds of living tissue covered by enamel. The living tissue will repair itself, but the cells which create enamel are broken down at the end of tooth formation. level 1
jjackson25
1 point · 6 years ago
because we cant live off mountain dew and skittles our entire life without some sort of punishment... the only reason I can see. View Entire Discussion (4 Comments)
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ELI5: