To minimize radiation exposure to the operator during dental radiography, the recommended practice is to

• A. Stand in line with the primary beam
• B. Hold the receptor manually
• C. Use a position-indicating device and stand behind a protective barrier
• D. Leave the room during exposure

Answer: (C)

The key idea is protecting the operator by using shielding and proper beam control. Standing behind a protective barrier blocks much of the scattered radiation that escapes the patient and beam path, while a position-indicating device helps aim and limit the exposed field so the beam is directed exactly where needed. This combination keeps the operator out of the direct line of the primary beam and shields against secondary radiation, which is the most effective way to minimize exposure.

Choosing to stand in line with the primary beam would place the operator directly in the path of the strongest radiation. Having someone hold the receptor manually increases exposure to the hands and arms, which is unsafe. Leaving the room during exposure is protective, but not always practical in routine operatory workflows.