Open Wide
I work at a dentist’s office. A patient came in for an exam, concerned that a part of her tooth was chipped off. On examination, it was not a chip, but rather a piece of calculus, which is the build-up of hard tartar that covers your teeth over time when you don’t brush them.
It can be small deposits, or in this case, an entire “bridge” covering her actual teeth.
She thought the calculus was tooth material and was quite shocked to learn we were actually unable to see her real teeth. We gave her an extensive cleaning to remove it all. Story credit: Reddit / GrayGhoast