Firstly, this model deserves to win the test because it always effortlessly ensures completely clean teeth. It is also easy to use, even though its range of functions is significantly wider than that of other sonic toothbrushes, as the intensity of the vibrations can be adjusted regardless of the mode...

With charging glass. The rather expensive sonic toothbrush cleans the teeth well. If too much pressure is applied to the teeth and gums, the visual pressure control warns you. Four different cleaning settings, each with three different intensity levels, can be selected. In addition to a conventional charging station, a charging glass and a travel case are also supplied...

The model "IO Series 7N" from Oral-B, at 215 francs one of the most expensive devices tested, scored best. It achieved the second-best score for the main criterion, rounding off the bristles. The device was also convincing in the other criteria. Also good: more than 100 brushing operations can be performed with one battery charge...