This Man Mass Produced the World’s First Toothbrush

By Samuel Phineas Upham William Addis is believed to be the first person to properly mass-produce a toothbrush. He was born in 1734, and nothing about his childhood suggests a penchant for oral hygiene. Instead, the origins of the toothbrush, as conceived by Addis, originated in prison. Was it the world’s first toothbrush? Not really. […]