Scaling involves gently removing plaque and calculus deposits using specialized instruments and without harming your teeth. The ultrasonic scaler uses vibrations to loosen hardened tartar that sticks to the teeth/in between teeth. Water spray is also used to wash away the debris.
Polishing is usually carried out after scaling to remove stains and make your teeth feel smooth and shiny. Polishing is done by scooping up a toothpaste-like material into a soft rubber cup, which is then spun around the teeth.