Which technique helps polish difficult-to-reach areas of teeth during coronal polishing?

Using a smaller prophy cup or brush is effective for polishing difficult-to-reach areas of teeth during coronal polishing because it allows for greater maneuverability and access to tight spaces. The smaller size enables the dental professional to navigate around contours, interproximal areas, and other challenging spots where a larger prophy cup might be less effective. This precision is crucial for ensuring that all surfaces of the teeth are polished, promoting better oral hygiene and aesthetic results.

In contrast, larger prophy cups, while efficient for broader surfaces, may not be able to adequately clean and polish areas that are harder to reach. Electric flossers and dental picks also serve different purposes and are not typically utilized for polishing during coronal polishing procedures, as they do not provide the same polishing action that a prophy cup or brush can achieve.