Which task can a dental assistant perform while under direct supervision?

A dental assistant, while under direct supervision, can change bleach pellets in the internal bleaching process because this task is typically considered to be supportive and non-invasive, allowing the dentist to oversee the procedure closely. Under direct supervision, the dentist must be physically present in the office and ready to offer guidance or intervene if necessary.

Tasks like initial access preparation for extractions and performing root canals require a level of expertise and training that goes beyond the scope of what a dental assistant can perform, even under direct supervision. These tasks involve significant clinical judgment, diagnosis, and technical skill that are reserved for licensed dental practitioners.

Applying aerosol topical anesthetics also falls outside the permitted duties for a dental assistant, as this procedure involves more complex patient management and consideration of the anesthetic's effects, which typically necessitates the dentist's direct involvement and oversight.

In summary, changing bleach pellets is an appropriate task for a dental assistant under direct supervision, as it aligns with the permissible duties while ensuring that the dentist is overseeing the process.