|FIRST DENTAL CHAIR|
Natural bristles brushes were invented by he ancient Chinese. In 1938, the first nylon bristle toothbrushes was manufactured by DuPont. The first electric toothbrush was produced in 1939, and developed in Switzerland. Toothpaste was used as long ago as 500 BC in both China and India; however, modern toothpaste was developed in the 1800s. In 1872, Silas Noble and J. P. Cooley patented the first toothpick manufacturing machine. The 1960's saw the introduction of fluoride into toothpaste which remarkably reduces the incidence of tooth decay.