On Jul 1, 2:27 pm, Mark & Steven Bornfeld
<bornfeldm...@dentaltwins.com> wrote:
> Amatus Cremona wrote:
> > Do humans chew raw grasses that have not had the sand rinsed out ?
>
> > Let me re-phrase my comment to say that modern human chewing in western
> > nations does not contribute to tooth wear.
>
> Sometimes I really really really rinse my spinach out, and there's
> still sand.
> Your statement is pretty absolute. Considering I've never seen an
> older patient without significant wear, does that mean that everyone is
> in parafunction?
>
> Steve
>
> --
> Mark & Steven Bornfeld DDShttp://www.dentaltwins.com
> Brooklyn, NY
> 718-258-5001
No, it's obvious to me that normal wear occurs as the years go by.
Parafunction can create abnormal wear. Mastication creates normal
wear.
It's just a matter of physics. Anything, even teeth, used to mash up
food for sixty years will show wear. Normal, expected wear does not
mean parafunction.
Parafunction is a significant problem for a significant part of the
population. But we all have seen those molar cusp-tip "bowl-shaped"
depressions growing in our older patients, where no opposing tooth can
even reach down into that "bowl" to create the wear. That shape of
wear is due to masticated food wearing away the dentin faster than the
harder enamel.
So wear on human teeth is normal. And it will vary significantly from
one person to another.
- dentaldoc
Steven Fawks
Amatus Cremona
