I mentioned Lantis and OCT to my dentist about a year ago.  His only comment was that it was probably still a few years away and the unit would cost over 100K. 

Three months ago we discussed it again. He investigated it and when I returned he was excited that he bought some shares at 31 cents.

I would be willing to bet that many of the larger blocks of shares bought over the last few months have been by dentists.