Final answer:
A dental assistant's typical tasks include cleaning and polishing teeth, applying sealants, and assisting with dental procedures.
Step-by-step explanation:
A typical task of a dental assistant is to clean and polish a patient's teeth. This involves removing plaque and stains, using dental instruments and polishing devices to make the teeth smooth and shiny. The dental assistant may also apply a sealant to a patient's teeth, which helps to prevent tooth decay. While dental assistants work closely with dentists, they do not typically administer anesthesia or prepare the dental treatment room.