What is the recommended motion when using a rubber cup for polishing?

When using a rubber cup for coronal polishing, the recommended motion is a slow, steady speed combined with a lifting wiping motion. This technique allows for controlled application of the polishing paste against the tooth surface, ensuring effective removal of biofilm and stains without causing damage to the enamel or gingival tissues.

The slow, steady approach enhances the polishing effect while minimizing the risk of overheating the tooth or abrasive damage. This method allows the operator to maintain dexterity and precision, leading to better clinical outcomes. The lifting motion helps in achieving a more thorough cleaning by effectively removing debris and polish from the surface after each stroke, rather than pushing it into the gum line or other areas where it might cause irritation.

Other methods, such as quick circular motions or fast up and down motions, can lead to inadequate polishing results or harm the enamel and gums due to high speed and insufficient control. A back and forth scrubbing motion can also lead to uneven polishing and may not effectively remove stain, potentially leaving some areas untreated. The recommended technique stands out as the most effective and safe approach for professional coronal polishing.