What is the appropriate angle for the polishing cup on the tooth surface?

The appropriate angle for the polishing cup on the tooth surface is a 60-degree angle because this angle effectively allows for optimal access and adaptation of the polishing cup to the contours of the tooth. When the polishing cup is positioned at a 60-degree angle, it ensures that the abrasive action is directed appropriately toward the tooth surface without risking damage to the gingival tissues. This angle facilitates controlled movement during the polishing process, which is crucial for achieving a smooth surface while minimizing the risk of enamel abrasion or trauma to the surrounding soft tissues.

The 60-degree angle also supports the proper application of polishing materials, ensuring they can adequately remove plaque and stain without compromising the integrity of the enamel. Polishing at this angle ensures the effectiveness of the procedure while maximizing patient safety and comfort.