What is the correct speed setting to use on a slow-speed handpiece during polishing?

The appropriate speed setting for a slow-speed handpiece during polishing is generally within the range of 10,000 to 30,000 RPM. At this speed, the handpiece provides sufficient power to effectively polish the surface of the teeth without generating excessive heat, which could lead to discomfort or damage to the tooth structure or surrounding tissues. This speed is optimal for using polishing pastes and ensuring that the enamel is smoothed and shined correctly while minimizing the risk of abrasion.

Higher speeds can result in increased friction, which can lead to overheating and potential injury to the tooth or gum tissue. Therefore, the selection of 10,000 to 30,000 RPM balances efficacy in polishing with safety for both the patient and the tooth structure. Other options suggest speeds that are either too low or too high for the purposes of effective coronal polishing.