Oral-B iO Gentle Care Electric Toothbrush Heads, Pack of 4 White Replacement Heads, Gentle and Effective Cleaning of Sensitive Gums and TeethFor gentle and effective cleaning of sensitive gums and teeth On the round brush head of the Oral B toothbrush, the bristles are carefully arranged to better surround each tooth and achieve effective cleaning Dentists recommend changing your toothbrush every 3 months for effective cleaning Designed exclusively for your Oral B iO Oral B, the most used toothbrush brand by dentists in the world Number of toothbrush heads included: 4