Electric toothbrushes with a pressure sensor ensure that you don't apply too much pressure to your teeth and gums. Most toothbrushes with a pressure sensor notify you with a light signal or short vibration. Usually, the electric toothbrushes with a sensor also slow down when you apply too much pressure. Some Philips and Oral-B toothbrushes with pressure sensor notify you via the accompanying smartphone app as well. This way, you avoid damaging your gums.