Irons:

He needed a piece of floss.

There was something caught on his back tooth, and no matter what
he did, no matter how many fingers he shoved into his mouth, he
couldn't get rid of it. It was driving him crazy. He tried
using the point of the 17th century Italian dagger he used as a
letter opener, but all that did was make his gums bleed. He
tried using the edge of one of his gold-embossed business cards,
but with all the blood in his mouth, the paper was useless.

Even in death, Elizabeth Bronte plagued him.