"Well it probably doesn't have any cavities," said one commenter on the viral Reddit post.
The patient had neurosurgery that removed the nail successfully with "no neurological deficits" present.
The 72-year-old man had to have emergency surgery after an X-ray revealed the dentures.
For the first time, scientists have used this information to estimate how fast a black hole is spinning.
"The first initial results are incredibly mind-blowing."
Biblical scholars have been waiting for a clear shot at M.910 since the early '60s.
The X-ray allowed researchers to examine the rich assortment of objects that had been buried inside along with the girl's body.
Researchers have never before witnessed this phenomenon, akin to a microscopic black hole.