The Smart 4 uses a handle design that has been tried, tested and perfected over many years and I really can’t find any obvious faults with it. It is well built and solid in hand.

You see, applying too much pressure when brushing is a big issue and it causes more damage than you might think. Excessive pressure can damage the gums and cause wear on your teeth. A brush need only skim the surface of the tooth and gums. So, the brush reduces the power to protect your teeth. At the same time as the LED pressure sensor illuminates, you should also notice that the speed of the brush head will decrease and the sound of the motor will change. This is nothing to worry about. It is programmed to do this, until such time as the pressure is relieved. I suspect over time you will learn this, but wouldn’t some icons or LED’s be helpful to show the mode. The more premium Smart 6 and Genius range offer them.The Oral-B Pro 2 2000 has 2 cleaning modes, the Pro 3 3000 has 3 cleaning modes, the Smart 5 5000 has 5 cleaning modes, so as you would imagine the Smart 4 has 3 cleaning modes….Yes, I know, I can’t quite figure that out either.

If you are particularly interested in the feature set of the Smart 4 4000, the Oral-B Teenhas identical technical specs, but can be snapped up cheaper. The only differences are the design and box contents. There is no denying that this brush cleans the teeth and mouth well. It offers a pretty decent battery life, whilst also looking fairly good and feeling solid and slim in hand. If you take a look at the very bottom of the brush handle, there is a recess, into which the pin on the charging stand connects to. A charging stand is provided.I think this is a big oversight and even if it meant a few extra pounds being added to the price, I think it would have been a worthwhile addition.