Toothbrush including a brush head arranged on a handle, characterized in that it is additionally provided with a device for measuring the pressure on the brush head in the direction of the plane of the brush head, if this plane is essentially vertical, perpendicular to the axis of the handle, - a device for entering the maximum permitted pressure on the brush head in the direction of the plane of the brush head, if this plane is essentially vertical, perpendicular to the axis of the handle, - a device for comparing the measured pressure with the maximum permitted pressure - a device that, in the event that the measured pressure exceeds the maximum permitted pressure, sends a warning signal to the user of the toothbrush and / or other devices / persons.
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