Tooth Advertisement

I was unable to find a whole lot of detail about this piece...

I had questions but little answers.... Is it a real sized tooth? or is it larger scale? 

It only had this caption

Maxam Toiletries created these creative ads depicting civilizations being built inside of teeth

Im assuming its about tooth Decay of some kind, It rotting but its the creativity that struck me into this piece....

If my tooth did indeed rot i would not be unhappy if it rotted in this way!