Which finger is primarily used for the fulcrum during coronal polishing?

The ring finger is primarily used as the fulcrum during coronal polishing because it serves as a stable support point that helps to control the movement and position of the handpiece while polishing. This finger’s placement allows for improved stability and precision, enabling the dental hygienist or assistant to apply appropriate pressure and maintain control over the polishing instrument. By using the ring finger as a fulcrum, practitioners can ensure a smoother and more effective polishing action, thus enhancing the overall results of the procedure. In the context of executing coronal polishing, having a stable fulcrum is essential for maneuvering the handpiece effectively around the contours of the teeth.