Final answer:
Dentists may not delegate duties such as diagnosing oral diseases, prescribing medications, or performing surgical procedures to dental hygienists, while dental assistants are generally not allowed to perform tasks requiring a dentist's judgment such as administering anesthesia. However, the specific duties that can and cannot be delegated vary by jurisdiction.
Step-by-step explanation:
The duties that a dentist may NOT delegate to a dental hygienist generally include diagnosing oral diseases, prescribing medications or treatments, and performing surgical procedures. A dental hygienist may perform tasks such as teeth cleanings, patient screening procedures, and applying preventive materials to teeth (like fluoride and sealants), subject to the regulations of the jurisdiction in which they are practicing.
As for a dental assistant, the non-delegable duties include those that require the professional judgment and skills of a dentist, such as administering anesthesia, except in some jurisdictions where they can be trained and certified to perform such tasks. Duties that may be delegated to dental assistants typically involve preparatory work, such as sterilizing equipment, assisting with dental procedures, taking dental x-rays (with appropriate certification), and other supportive tasks.
It's essential to note that the specific duties that can be delegated to dental hygienists and assistants can vary significantly from one jurisdiction to another, as each state or country sets its own regulations and scopes of practice.