Intraoral dental x-ray imaging has an effective dose range of

• A. 1-8 uSv
• B. 10-20 uSv
• C. 0.4-0.8 mSv
• D. 40-80 uSv

Answer: (A)

The main idea is that a single intraoral dental X-ray delivers a very small amount of radiation, measured as effective dose in microSieverts. The effective dose accounts for the fact that different tissues have different sensitivities to radiation, so it lets us compare how risky different imaging procedures are.

For a single intraoral image (bitewing or periapical) with modern equipment and appropriate technique, the typical effective dose is about 1 to 8 microSieverts. This small range reflects the localized exposure and the use of fast sensors and proper filtration, which keep dose down while still providing diagnostic quality.

The other ranges are not representative of a single intraoral image. Values like 0.4–0.8 mSv are hundreds of microSieverts and would be much higher than what one image generally delivers. Even 40–80 μSv is larger than the usual per-image dose, though it might correspond to some higher-speed settings or specific circumstances. Thus, the correct range for a single intraoral radiograph is 1–8 μSv.