Which aspect is NOT a requirement for the supervision of a dental hygienist?

The correct answer is related to the requirement for supervision of a dental hygienist in Oklahoma. For dental hygienists to practice, specific conditions must be met regarding the dentist's role in the patient care process. The fact that the dentist must have accepted the patient (the first choice) ensures that the dentist has taken responsibility for that patient’s care. Proper authorization from the dentist (the third choice) is essential because it delineates the scope of practice that the dental hygienist is permitted to perform. Additionally, evaluating treatment results (the fourth choice) is a crucial part of the supervisory role, ensuring that the care provided meets the standards and expectations set by the supervising dentist.

In contrast, the stipulation that the dentist must be unavailable during the procedure is not a requirement. In fact, for proper oversight and patient safety, it is expected that the dentist can be contacted if necessary. The supervision model allows dental hygienists to function within their scope while still ensuring that a dentist is ultimately responsible for the patient's care, but the dentist's unavailability does not eliminate this responsibility. Thus, this aspect is not a requirement for the supervision of a dental hygienist.