Final answer:
In four-handed dentistry, the dental assistant should receive a cutting instrument using a transfer zone and a modified pen grasp, while avoiding sharp ends to prevent injury.
Step-by-step explanation:
When utilizing correct four-handed dentistry techniques, the dental assistant should receive a cutting instrument with the use of a specific protocol to ensure safety and efficiency. The assistant typically uses a transfer zone, which is located close to the patient’s mouth, to minimize unnecessary movements. The assistant should hold the sterilized tray or cassette in one hand, and with the other hand, use a modified pen grasp to receive the instrument. It is crucial to avoid any sharp ends or blades to prevent accidental injury. After receiving the instrument, the dental assistant should be ready to provide it to the dentist in a position that allows for immediate use.