1. After tooth cleaning, apply a proper amount of polishing paste to the tooth surface with a clean toothbrush, select a suitable polishing tool, and put it into a matching low-speed bending machine.

2. Immerse the polishing tool in the polishing paste of the tooth surface, and perform the same direction low-speed rotation polishing to remove the scratches on the tooth surface.

3. When the tooth surface is smooth and bright, stop grinding and thoroughly clean the mouth with mouthwash.