Which tool is primarily used during the coronal polishing procedure?

The primary tool used during a coronal polishing procedure is the dental handpiece. This tool is essential for effectively delivering the polishing paste at high speeds, which is necessary for the proper removal of plaque, stains, and biofilm from the coronal surfaces of teeth. The dental handpiece allows for the use of various polishing cups and brushes to ensure that all surfaces of the teeth are accessed and thoroughly polished, promoting both aesthetic results and dental health.

The effectiveness of coronal polishing relies significantly on the capabilities of the dental handpiece to achieve a smooth finish on the enamel and to enhance the overall appearance of the teeth. Its design enables dental professionals to maneuver easily in the mouth while maintaining control and precision, which are critical for avoiding damage to the tooth structure or gums.

Other tools listed serve different functions. An ultrasonic scaler is used for scaling and removing tartar but is not suitable for polishing surfaces. An explorer is mainly utilized for examining tooth surfaces and lesions, while a periodontal probe is used to assess periodontal health. Hence, these tools do not serve the primary purpose of conducting a coronal polish.