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You know how human teeth have those prong bits that anchor into the gums, the “root”? Inside those are the nerve canals: spaces filled with a pulp that nerve endings run through.

Shark teeth don’t have these canals in their root. Their teeth aren’t anchored into the gums and don’t connect to any nerve endings.

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marduk@lemmy.sdf.org ⁨4⁩ ⁨days⁩ ago
Does that mean they can bite into the ice cream without their teeth hurting?!

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- Crankenstein@lemmy.world ⁨4⁩ ⁨days⁩ ago
  Uhhh… Actually, after giving it some thought, yea probably.
  
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  - blackbrook@mander.xyz ⁨3⁩ ⁨days⁩ ago
    But do they get head-freeze if they eat it too fast?
    
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    Crankenstein@lemmy.world ⁨3⁩ ⁨days⁩ ago
    This was fun researching and theorizing. Thanks for asking.
    
    We experience brain freezes when a sharp temperature drop comes into contact with the roof of the mouth and back of the throat, causing the blood vessels to constrict, which in turn causes the arteries in the brain to expand. It isn’t exactly clear where the “pain” comes from though; it is theorized that the arterial wall’s expansion triggers the trigeminal nerve (relays sensory info between face and brain) and is registered as a pain sensation.
    
    Shark anatomy is entirely different in structure, such as they don’t have the same complex nervous system. Also, considering they are ectotherms, their body responds in completely different ways to changes in temperature than we do.
    
    So considering what we know about shark physiology and the current theory on the mechanics behind “brain freezes”, probably not.
    
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Anomalocaris@lemm.ee ⁨2⁩ ⁨days⁩ ago
that’s why they can have so many teeth,

imagine humans with10 times the amount of teeth, and therefore 10 time more likely to get tooth ache.

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MTK@lemmy.world ⁨4⁩ ⁨days⁩ ago
Thanks!

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