What the person whose jaw is x-rayed below has in common with me: a molar with four nerve canals. Apparently molars usually have three, but my endodontist found out Wednesday that one of mine has four.
I am a little sad to think that my poor little molar has had its nerves all drilled out and the spaces filled with rubber. But when I think of what those nerves were doing to my head before they got removed, I get less sad.
In memoriam, The Nerves of Tooth # 14.