Oral-B iO 5N Black and White Duo Pack

The AI app promotes brushing

The toothbrush leaks so that only toothpaste is underneath. This is due to the large holes in the bristles. Previously a sonicare and that had no problem with this.

Initially, I was very complimentary about this toothbrush: it is easy to use, especially due to the timer that indicates how much longer you need to brush and the sensor that tells you if you are brushing too hard. However, after prolonged use, the two toothbrushes I had purchased started working increasingly poorly, and I had to register both of them for repair separately. The battery deteriorated until it stopped charging altogether. By the third time it broke, the repair had already fallen outside the warranty period. Worthless, and therefore an unsustainable electric toothbrush for a lot of money!