Bristle Toothbrush By themash 1498 The Creation of the Bristle Toothbrush 1844 Three-Row Toothbrush Invented 1938 Bristles Made of Nylon 1950 Softer Nylon Bristles Created 1954 Electric Toothbrush Created 1960 Electric Toothbrush Gained Popularity 1992 Sonic Toothbrush Invented 2008 Quality of Sonic Brushes Improved