With the built-in pressure sensor, you know when to adjust the pressure. It's safe to use with braces, fillings, crowns and veneers. To help you get used to the Sonicare experience, the EasyStart feature adjusts the power level of the toothbrush over the first 14 uses for a gradual, gentle increase in brushing power.
Very pleased with the Sonic 3100 series dual pack. I bought these for myself and daughter. The electric brushes are light in weight and smaller than my previous brush. It is very effective and cleans my teeth without any problems. I bought the dual brushes at an affordable price and I am pleased with my purchase.