The Oscillating teeth cleaning system makes 5,600 side-to-side movements per minute for thorough cleaning. Rotating power head reaches, surrounds and thoroughly cleans multiple surfaces. Extra soft bristles mean kids get a gentle, yet thorough brushing experience too. Removes more plaque than a regular manual toothbrush and makes brushing teeth for kids more fun with Disney Cars & Planes characters. It’s recommended to replace brush head every 3 months or sooner if brush head becomes worn.