Toothbrushing. Coloured scanning electron micrograph (SEM) of toothbrush bristles (orange) scrubbing a tooth (light blue). Debris on the tooth is coloured green. Toothbrushes are used with toothpaste to remove food particles and dental plaque from teeth. Regular toothbrushing is recommended by dentists to prevent tooth decay. Magnification: x15 at 6x7cm size.
