Ever starred at someone's open mouth 
And noticed the teeth that are peeking out,  
Sometimes they are there to see 
Even when the owner doesn't want them to be. 
 
Perhaps the lips are drawn tight 
To hide some mystery from the light 
Or to project a grim unsmiling face 
Making sure that there's no joy in this place. 
 
But mostly teeth are there to bare 
So everyone can the moment share 
As example when the camera flashes 
To reveal the pretty white ones. 
 
Of course there's the Terry Thomas gap 
That is a trademark of his grin 
When he with perhaps a lecherous smirk 
Is going to do someone a bit of dirt. 
 
Or when in television glare 
The pretty anchor is about to share 
Some bit of news with breathless presence 
Announcing some catastrophic event.  
 
But I prefer to remember most 
Those teeth that long ago gave up the ghost 
And while yellow and sculpted with cavities many 
Are saved to remind one of the relief from agony 
That a visit to the dentist office brought 
When extraction was the solution sought.
Sidi J. Mahtrow
http://www.poemhunter.com/poem/thoughts-on-teeth/