...But if you go back far enough, there are fauns!

When I'm flossing my teeth lately, there's a spot on the top left that gives me trouble.  By which I mean: even when there's nothing visibly stuck between those two teeth, I can dip under the gumline and tease out a chunk of stuff the size of a smoked ham.  And then I can do it eight more times.

It's kind of worriesome.  Like...how far back does this particular interdental crevice go, exactly?!?!?  I'm starting to think those two teeth form a gateway to Narnia.