Oral-B's iO Ultimate Clean brush head is specially designed for effective cleaning, for up to 100% plaque removal from day one • Ultimate Clean combines Oral- B's perfect angle with innovative new bristles for Oral-B's best cleaning • For up to 100% plaque removal from day one • On Oral-B's signature round brush head, the bristles are carefully positioned for to envelop each tooth for the best possible cleaning • Exclusively designed for and guaranteed to fit your Oral-B iO • From the brand most dentists recommend worldwide