Which of the following is a duty exclusive to licensed dentists in Ohio?

Administering local anesthetic injections is a duty that is exclusive to licensed dentists in Ohio. This responsibility requires not only an understanding of human anatomy and the physiological effects of anesthetics but also the ability to assess a patient’s medical history and determine the appropriate type and dosage of anesthetic to use. The administration of local anesthesia directly impacts a patient's experience during dental procedures and necessitates a level of training and expertise that is legally reserved for licensed dentists.

The other duties listed, such as placing dental fillings, taking X-rays, and conducting patient education sessions, may be performed by dental assistants or expanded function dental assistants under the supervision of a licensed dentist, provided they have received appropriate training. However, the specific act of administering local anesthetics is tightly regulated and reserved for those with full licensure due to the potential risks and complications that can arise from improper administration.