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Author Topic: Why aren't humans born with teeth?  (Read 7639 times)

Allen

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Why aren't humans born with teeth?
« on: 28/08/2009 12:30:02 »
Allen asked the Naked Scientists:
   
Why aren't we born with teeth?

What do you think?


 

lyner

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Why aren't humans born with teeth?
« Reply #1 on: 28/08/2009 12:38:57 »
Only a Man could ask that question!
Would you volunteer to have some little soul tearing  hell out of your nipples every few hours?
It's a typical evolutionary argument "Survival of the gummiest", I think. And they don't actually need teeth.
« Last Edit: 28/08/2009 12:41:04 by sophiecentaur »
 

Offline Chemistry4me

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Why aren't humans born with teeth?
« Reply #2 on: 28/08/2009 12:47:35 »
Yeah, we didn't need any back in those days.
 

Offline Nizzle

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Why aren't humans born with teeth?
« Reply #3 on: 28/08/2009 14:17:41 »
Ok. Now that that's been answered...

How come we have two sets of teeth during our entire life?
Why not one or three or four?
 

Offline JnA

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Why aren't humans born with teeth?
« Reply #4 on: 28/08/2009 14:54:07 »
Actually some children *are* born with teeth already poking through. These are often loose and frequently are removed so to lessen a choking habit.
Generally babies don't need teeth, since the sucking reflex and breastfeeding are so complimentary. It is recommended that babies don't start eating solids until they 'learn to chew' which you often see them doing at about four to six months. This is learned though observation.
Conversely Babies can chew without teeth as well. Their little gums are quite solid and adept (as any breast feeding mother might be able to attest).

As an aside most of us have two sets of teeth throughout our lifetime.. but some can get three and some, as in yours truely, can have incomplete sets of teeth. (I had a 'baby' tooth until I was 19 since there was nothing to 'push it out'.

Most of it is hereditary.
 

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Why aren't humans born with teeth?
« Reply #4 on: 28/08/2009 14:54:07 »

 

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