What distinguishes intraoral radiographs from panoramic radiographs in terms of dose and typical indications?

• A. Intraoral radiographs involve multiple exposures with localized dose; panoramic radiographs are a single exposure with a different overall dose, and indications depend on diagnostic needs.
• B. Intraoral radiographs deliver no dose; panoramic radiographs deliver all the dose.
• C. Panoramic radiographs always deliver a higher dose than intraoral films.
• D. Indications are identical for both modalities.

Answer: (B)

The difference lies in dose pattern and diagnostic purpose. Intraoral radiographs require several small-area exposures, so the patient receives radiation localized to the region of interest with the total dose accumulating across the multiple images. A panoramic radiograph is acquired in a single exposure that covers the entire dental arc and surrounding structures, delivering dose in one sweep to a broader area. The total dose is not zero for either modality, and the panoramic dose is not simply “all the dose” compared to intraoral images—the exact comparison depends on technique and number of images. Indications reflect their scopes: intraoral imaging is best when you need detailed information about a few teeth, roots, and adjacent bone; panoramic imaging is used for an overall view of the jaws, eruption patterns, impacted teeth, trauma, and broader pathology.