WIth Oral-B electric toothbrushes for whiter teeth, you remove discoloration from your teeth. This setting changes the speed of the brush. You polish your teeth with the brush, which results in whiter teeth. Want an even better result? Combine this setting with a brush attachment for whiter teeth. The Oral-B iO 5 up to 10, the Genius, and the Pro models have a setting for whiter teeth.