Which role involves working directly under the supervision of a dentist?

The role of a dental assistant is characterized by direct involvement in assisting a dentist during various procedures. Dental assistants are trained to handle tasks such as preparing the treatment area, sterilizing instruments, and sometimes even directly supporting the dentist during examinations and treatments. This role requires close collaboration and communication with the dentist, ensuring that the workflow in the dental practice is smooth and efficient.

Dental hygienists, while also part of the dental team, primarily focus on preventive care and oral hygiene education for patients. They often work independently to perform cleanings and check-ups, but do not work directly under the dentist's supervision in the same manner as dental assistants do.

Periodontists and prosthodontists are specialized dental professionals with advanced training. They focus on specific areas of dentistry—periodontics deals with gum disease and related structures, while prosthodontics involves the design and fitting of artificial teeth. Although they may supervise their teams, they do not function as dental assistants who provide direct, day-to-day support to a dentist during routine procedures.

Thus, the role that specifically involves working directly under the supervision of a dentist is indeed that of a dental assistant.