Brush like a Pro. The Oral-B iO Series 5 Electric Toothbrush combines powerful, but gentle micro-vibrations with Oral-B's dentist-inspired round brush head and advanced iO technology that delivers 100% cleaner teeth and healthier gums in just 1 week versus a regular manual toothbrush. Plus, state-of-the-art features including A.I. position detection to recognize your brushing style and guide you to better brushing in real-time.