The replacement brush heads for the Oral-B iO series, known as Gentle Care, integrate soft micro-vibrations with a uniquely rounded design that aligns with dental recommendations, ensuring you achieve a professional-grade clean every day. Tailored for use with Oral-B iO electric toothbrushes, these brush heads eliminate up to 100% more plaque than traditional manual brushes, resulting in cleaner, brighter teeth. These Gentle Care heads are equipped with 4,000 delicate bristles along with a cushioned outer ring that conforms to your teeth's contours, safeguarding your gums. Dentists replacing advise your brush head every three months to uphold peak efficiency; therefore, these heads feature bristles that change color as a reminder for replacement. Experience exceptional cleaning with these specialized brush heads made for your Oral-B iO electric toothbrush.