Twenty years ago I was told that if I didn’t do a better job cleaning my teeth I soon wouldn’t have any. Since then I have been a champion brusher and flosser and user of interdental brushes in three different sizes — which must make me the ideal customer for the smartest of all smart toothbrushes, the new Oral B Genius 9000.
To use the toothbrush you have to attach your phone to your bathroom mirror at mouth level so that its camera can keep an eye on you as it takes you on a “28 day plaque journey”.
As I brushed, the screen lit up telling me which bit of my mouth I was working on. This might have been smart, only I knew the answer already. It timed my brushing (a task my own electric toothbrush does efficiently) and while it did so distracted me from the job by telling me (incorrectly) what the weather was like outside, and what was happening in the world.