Which of the following duties are part of direct supervision?

The choice that states the dentist personally diagnoses, authorizes the procedure, and evaluates the performance afterward accurately reflects the principles of direct supervision in dental practice. Under direct supervision, a dentist must be physically present in the office and actively involved in overseeing the procedure being performed. This entails not only diagnosing and authorizing the treatment but also evaluating the outcome to ensure it meets the necessary standards of care.

This hands-on involvement is critical as it ensures that the dental auxiliary performs their duties within the parameters set by the dentist, who remains responsible for the patient's care. Direct supervision is essential for patient safety and allows for immediate correction or intervention if any issues arise during the procedure, thereby enhancing the quality of care provided.

Other options incorrectly describe the supervisory framework. For instance, the idea of the dentist being outside the office while a procedure is performed does not align with direct supervision, as it implies a lack of oversight. Similarly, allowing the dental auxiliary to perform functions without clear prior instructions or guidance undermines the structured approach necessary in a supervised setting. Finally, the absence of need for the dentist to evaluate the procedure contradicts the very essence of direct supervision, where evaluation is a key component of the dentist's responsibilities.