Dental Radiation Dose Calculator
Select a dental X-ray type and number of exposures to estimate effective dose in µSv and mrem, compared to daily background radiation.
Enter Procedure Details
Estimated Effective Dose
Total Dose
—
µSv (microsievert)
Total Dose
—
mrem (millirem)
Background Equivalent
—
hours of natural background
0 µSv
1000 µSv (1 mSv)
Reference Dose Ranges by Procedure
| Procedure | Dose Range (µSv) | Used (µSv) |
|---|---|---|
| Periapical (per image) | 1 – 8 | 4.5 |
| Bitewing (per image) | 1 – 8 | 4.5 |
| Occlusal (per image) | 4 – 30 | 17 |
| Panoramic (full mouth) | 4 – 30 | 14 |
| Cephalometric (lateral skull) | 2 – 6 | 4 |
| CBCT — Limited FOV | 19 – 652 | 68 |
| CBCT — Full Arch | 68 – 1073 | 193 |
| Full-Mouth Series (FMX, 18 images) | 34 – 170 | 85 |
Dose midpoints from NCRP Report No. 177 and European Commission RP-136. Educational reference only.
Summary
Select a dental X-ray type and number of exposures to estimate effective dose in µSv and mrem, compared to daily background radiation.
How it works
- Select the type of dental X-ray procedure from the dropdown.
- Enter the number of images or exposures taken.
- The calculator multiplies the count by the published reference dose per exposure for that procedure type.
- Results show total dose in µSv and mrem, plus how many hours of natural background radiation that equals.
- All dose values are based on published reference ranges; the midpoint is used for estimation.
Use cases
- Understand how much radiation a full-mouth X-ray series delivers.
- Compare the dose of a CBCT scan to a standard panoramic film.
- Explain radiation context to patients asking about dental imaging.
- Estimate cumulative dose across multiple dental visits.
Frequently Asked Questions
Last updated: 2026-07-23 ·
Reviewed by Nham Vu