Oral-B Charcoal Cavity Defense (Medium) toothbrush is a dental tool designed to provide effective cleaning and cavity protection for your teeth. It features a combination of medium bristles and charcoal-infused bristles to help promote oral health. Charcoal-Infused Bristles: The toothbrush is equipped with bristles that are infused with activated charcoal. Charcoal has adsorbent properties, which means it can help remove surface stains from the teeth and provide an extra level of cleaning. Medium Bristles: The toothbrush has medium bristles that strike a balance between soft and firm. These bristles effectively clean the teeth and gums without being too harsh on sensitive oral tissues. Cavity Defense: The toothbrush is designed to aid in cavity defense by effectively removing plaque and food debris from the teeth, helping to prevent cavities and maintain good oral hygiene.