Hi Gary,
I just luuurrv root canal therapy

One I had a few years back was for the lower rear molar. It was discovered that I had a "C" root (yep, looks like the letter!), more common in Asians (I'm not). The dentist had to find extra tools to get right down in there, and of course delighted in showing his assistants my unusual root! Five or six treatments later, lots of dollars, I lived to tell the tale.
Now I'm on display again, with the radiated mouth...maybe I should counter-charge for viewing rights?
Cheers!
Tizz