Timeline of the toothbrush
Chew sticksThe earliest chew sticks were discovered in Sumer in southern Mesopotamia. Chew sticks were twigs with frayed ends used to brush the teeth while the other end was used as a toothpick.
First mass produced toothbrushWilliam Addis invented what we now know as the modern toothbrush. He attached pig bristles to a specially carved handle made from cow bone.
First nylon bristle toothbrushThe first nylon bristle toothbrush made with nylon yarn went on sale
The toothbrush was selected as the number one invention Americans could not live without according to the Lemelson-MIT Invention Index.