Final answer:
Expanded functions in dentistry must be performed under varying levels of supervision, which are typically direct, indirect, or personal, depending on local regulations and the type of function being performed.
Step-by-step explanation:
All expanded functions performed by dental assistants or other dental healthcare professionals must be performed under a specific level of supervision, which could vary depending on the jurisdiction and specific regulations of the dental practice. In general, this supervision is often categorized into direct or indirect levels.
Direct supervision means that the dentist is physically present in the treatment facility while the expanded functions are being executed. Indirect supervision, on the other hand, typically allows the dental professional to perform certain functions without the dentist being in the room, provided the dentist is available in the facility for consultation or emergencies.
Certain functions may require personal supervision where the dentist needs to be actively involved in directing the procedure. It's essential to consult local regulations and guidelines issued by dental boards or governing bodies to determine the exact supervision requirements for expanded functions.