Final answer:
When using a piezo ultrasonic scaler on sensitive teeth or gums, you should not move the instrument more slowly, as it can increase heat and discomfort. Instead, you should use less power and adjust the water flow for cooling.
Step-by-step explanation:
If using a piezo ultrasonic scaler on a patient with sensitive teeth or gums, there are specific precautions one should take to avoid discomfort or damage. The question is asking what one should NOT do in such a situation. The correct action would be to NOT move the instrument more slowly. Moving slowly can increase the amount of heat generated at the tip, which can exacerbate sensitivity and discomfort.
Instead, one should use less power, turn down the water if it is causing discomfort (or possibly turn it up if it is not sufficient to cool the area), and ensure there is an adequate water flow to the tip to prevent overheating. These measures help to minimize the discomfort for the patient while ensuring effective cleaning.