Abfraction lesions are small cracks or notches in your teeth caused by the natural flexing of teeth over time. Each time you clench your teeth, chew or bite down on something, pressure is put on your ...

A large comparative study of primate teeth shows that grooves once linked to ancient human tooth-picking can form naturally, while some common modern dental problems appear uniquely human.

For decades, anthropologists believed that thin grooves etched into ancient human teeth were the earliest evidence of tool use—primitive toothpicks used to clean teeth or ease gum pain. These marks, ...