Oral b promo t/B pro-Expert all in one med 29496 - removes up to 99% of plaque in hard-To-Reach areas vs. A regular manual toothbrush. 16° angled crisscross bristles flex and straighten to penetrate hard-To-Reach plaque in-Between teeth. Power tip bristles help reach deep and clean hard-To-Reach areas while still being gentle enough on your enamel