Why is it essential to use a rubber cup for coronal polishing?

Using a rubber cup for coronal polishing is essential because it provides flexibility and allows for effective cleaning of various tooth surfaces while minimizing damage. The rubber material of the cup can adapt to the contours of different teeth, which is important for reaching and polishing hard-to-access areas and varying contours without traumatizing the enamel or gum tissue. This adaptability ensures that the polishing paste can effectively remove biofilm and stains from the tooth surface while reducing the risk of causing abrasion or other harm.

The design of the rubber cup also contributes to its function during the polishing process by allowing for a gentle yet thorough cleaning action. This is crucial for maintaining the health of the teeth and gums while achieving a polished and aesthetically pleasing surface. Overall, the use of a rubber cup is integral to the practice of coronal polishing, as it enhances both effectiveness and patient safety.