Thoroughly inspected by Toby.
The bristles of the Oral-B iO Ultimate Clean Black (4 units) were designed to remove plaque that resides deep between your teeth. The bristles are positioned at a 16-degree angle and adapt to your teeth. As a result, you won't miss a spot and you can thoroughly clean all your teeth. If you brush for 2 minutes two times a day, you need to replace the brush attachment within 3 months. This set has got you covered for one year. The brush attachments have exclusively been designed for the Oral-B iO product line.