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.