Tuesday, April 19, 2011

Aren't You Happy We have Toothbrushes Today?

The first toothbrushes were made out of sticks in 4000 B.C. After that, toothbrushes were made from bristly hog-hair. Plastic toothbrushes with nylon bristles were invented in 1938.
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)