Plague ( which is full of bacteria) frequently builds up around our teeth and along our gumline. Once it hardens into tartar, it is impossible to brush it off yourself - only professional cleaning can remove it. 

Scaling uses water and ultrasonic vibrations to only dislodge and wash away plaque, tartar and food debris. It is not strong enough to damage tooth structure, and therefore it is safer for your teeth.

Polishing after scaling removes any remaining bacteria from your teeth, making sure that they are thoroughly cleaned. Polishing can also remove stains from your teeth.