The Oral-B IO Ultimate Cleaning brush is removed up to 100%more plaque than a traditional hand toothbrush, providing the best cleaning from Oral B. The revolutionary magnetic technology of the IO toothbrush brings energy to the mountains of bristles. The twisted bristles are perfectly adapted to every teeth, while the "beer in bristles" bundles reach deep into the tooth. IO brushes are only compatible with Oral-B IO electric toothbrushes.