Oral-B CrissCross (Medium) toothbrush is designed to provide effective plaque removal and thorough cleaning for your teeth and gums. It features unique CrissCross bristles that are specially angled and arranged to reach deep between teeth and along the gumline. CrissCross Bristles: The toothbrush has CrissCross bristles with a unique design that forms an X-shape. These bristles are angled and arranged in a way that helps lift and remove plaque effectively from hard-to-reach areas between teeth and along the gumline. Medium Bristles: The toothbrush typically comes with medium bristles that provide a balance between gentle cleaning and effective plaque removal. The medium 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.