Oral-B is the world's no1 toothbrush brand used by dentists worldwide, which brings to you and your family revolutionary brushing solutions with best in class technology to ensure you and your family get healthier and cleaner mouth. Oral-B ultrathin sensitive black has 20x thinner bristle tips that stay gentle on your gums and clean between teeth. The brush has a combination of ultrathin and regular bristle tips which give you superior cleaning experience.Ultrathin bristles: 20x thinner bristle tips which stay gentle on gums and reach deeper between teeth.