• Ultimate Clean combines Oral B's perfect angle, with innovative new bristles, for Oral B's best clean
• For up to 100% plaque removal as of day 1
• On Oral B's signature round brush head, bristles are meticulously arranged to best surround each tooth for the best possible clean
• Dentists recommend to change brush head every 3 months for the best clean
• Designed exclusively for and guaranteed to fit your Oral B iO. Number of toothbrush heads included in this pack: 4.Choose Oral B, #1 used by dentists worldwide