Toothbrush
The first bristle toothbrush, resembling the modern toothbrush, dates back to the Tang Dynasty (619–907). The first patent for a toothbrush was granted to H. N. Wadsworth in 1857 in the United States.
tooth brush
The first bristle toothbrush, resembling the modern toothbrush, dates back to the Tang Dynasty (619–907). The first patent for a toothbrush was granted to H. N. Wadsworth in 1857 in the United States.