Patient guide · Imaging dose

How much radiation is a small 3D tooth scan?

Our J. MORITA Veraview X800 starts with a panoramic scout image, then a limited 40 × 40 mm scan of the area in question. Below are the manufacturer's published example doses, side by side with familiar references on one honest, linear scale.

In short: these three scan-plus-panorama examples are about 3, 4, and 7 days of average U.S. natural background radiation. The exposure is small, but not zero, so a scan should be taken only when it can change your care.

Published examples including a new panorama

Published Standard-mode phantom examples. Our selected Endo and resolution settings are not confirmed to match them; they are not a complete range and not your individual dose.

Every bar on the same ruler

Effective dose in microsieverts (µSv), linear scale starting at zero.

With a new panoramic image, the three published combinations are 22, 34, and 59 µSv — roughly 3, 4, and 7 days of average U.S. natural background (8.2 µSv/day).

If a suitable existing panorama is reused for target selection, selecting the region adds no new X-ray exposure; the scan itself still does (16, 28, and 53 µSv in these examples, roughly 2, 3, and 6 background days). With a new panorama the totals are 22, 34, and 59 µSv.

Background-day figures are perspective, not biological equivalence. A CT scan of the body is not shown: it is in a far larger range and would make every bar here unreadable.

Everyday and medical references (approximate)

• One day of natural background: 8.2 µSv. U.S. average: 3,000 µSv/year ÷ 365 [2]
• Panoramic dental X-ray: 25 µSv. General adult reference—not the X800-specific example [2]
• Coast-to-coast round-trip flight: 30 µSv. Approximate cosmic radiation exposure; route and altitude vary [2]
• Chest X-ray: 100 µSv. Approximate adult effective dose [2]

What “effective dose” means

Effective dose estimates overall radiation risk across the body, so different exams can be compared on one scale. It is measured in sieverts; small exams use microsieverts. 1 mSv = 1,000 µSv. It is a population estimate, not a personal risk calculation.

New panorama vs. existing panorama

The X800's Panoramic Scout lets the team pick the scan area on a panoramic image. Taking a new one adds exposure (6 µSv in MORITA's example). Using a suitable existing panorama does not itself add exposure. Extra scouts, retakes, or other X-rays are not included in any total above.

The published settings behind the numbers

Measured by J. MORITA on a reference phantom: female, 163 cm, 54 kg, X800 patient-size setting M. The table notes maximum values for DR. Your size, anatomy, tooth region, and chosen settings change real dose.

Important: these are selected Standard-mode estimates. Our selected Endo and resolution settings — rotation, kV, mA, exposure time, and tooth region — have not been confirmed against them, and other settings may give different doses. The three examples are not a minimum-to-maximum range. The 25 µSv panoramic reference in the chart is a general adult figure, separate from the 6 µSv X800-specific example.

Benefit and risk

No X-ray exam is risk-free. The FDA advises CBCT only when it is needed, using the lowest dose that still gives adequate diagnostic information. A medically appropriate scan's benefit generally outweighs its small radiation risk. Ask us why a scan is recommended for you.

[3]

Children

Children are more sensitive to radiation and need size-appropriate settings. Adult phantom values on this page do not apply to them.

[3]

Pregnancy

Tell the team if you are pregnant or may be pregnant, so any imaging can be individually justified and optimized — or postponed when appropriate.

[3]

Common questions

How much radiation is a 40 × 40 mm Veraview X800 scan?

MORITA publishes example effective doses of 16 µSv for an upper-incisor 180° scan, 28 µSv for a lower-molar 180° scan, and 53 µSv for a lower-molar 360° scan, at the listed Standard-mode settings. These are selected phantom measurements, not a complete range or your individual dose. High-resolution Endo settings may differ.

Does the panoramic scout add radiation?

Taking a new panoramic image adds exposure. MORITA lists a 6 µSv panoramic example at 70 kV, 8 mA, and 7.4 seconds. Adding it to the three CBCT examples gives 22, 34, and 59 µSv. Selecting a region on an existing suitable panorama does not itself add exposure; the CBCT scan still does.

Is a CBCT scan risk-free?

No X-ray exam is risk-free. The FDA advises using CBCT only when needed, with settings chosen to obtain adequate diagnostic information at the lowest appropriate dose. A medically appropriate scan's benefit generally outweighs its small radiation risk.

Are these doses the same for children or during pregnancy?

No. These reference values do not predict an individual's dose or risk. Children are more radiation-sensitive and need size-appropriate settings. Tell the team if you are pregnant or may be pregnant so imaging can be individually justified and optimized.

Sources

1. J. MORITA. Effective Dose Veraview X800: manufacturer phantom measurements.
2. RadiologyInfo.org (ACR/RSNA). Radiation Dose from X-Ray and CT Exams. Reviewed April 15, 2025.
3. U.S. FDA. Dental Cone-beam Computed Tomography: benefits, risks, and patient guidance.
4. J. MORITA. Veraview X800 features: Panoramic Scout and field-of-view selection.

The MORITA portal needs one browser session: open cir.morita-mfg.com/dose_en/, choose “For Medical Professionals,” accept the terms (“Yes”), select “View Estimates of Effective Dose per Single Image,” then “Veraview X800.” A direct link may show the entry page instead. The visible heading reads “Effective Dose Veraview X800” even though the browser tab title mentions another model.

Editorial note: prepared with AI assistance by the practice's editorial team; sources checked October 18, 2026. Clinical review is pending. This page is general education, not a diagnosis or a personal dose estimate. Questions about your imaging?

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