Is Dental X-Ray Radiation Safe?
By Dr. 1, [Full Name], [Qualification] · Reviewed 12 August 2026
Yes — dental X-rays and CBCT scans involve a very small radiation dose, well below levels considered a health risk, and every scan at Nagu Diagnostics is calibrated to ALARA (as low as reasonably achievable) protocols so you receive no more radiation than needed for a diagnostic-quality image.
How much radiation is actually involved?
Dental X-rays are among the lowest-dose imaging exams in medicine. An OPG (panoramic X-ray) delivers a dose comparable to a few hours of everyday background radiation from the environment. A CBCT scan involves more than an OPG, since it captures a 3D volume rather than a flat image, but it remains a small fraction of the dose from a full medical CT scan — and our field of view is sized to the specific area being examined, not scanned wider than necessary.
What is ALARA?
ALARA stands for "As Low As Reasonably Achievable" — a radiation safety principle that guides every scan we take. In practice, this means using the smallest field of view that still answers the clinical question, calibrating equipment regularly, and never repeating a scan unless clinically necessary.
Is it safe for children?
Yes, with the same ALARA principles applied even more carefully. Children's tissue is more radiosensitive, so pediatric protocols use a reduced dose and the smallest field of view appropriate for the case, typically for orthodontic assessment or trauma evaluation.
Is it safe to have repeat scans?
Dental imaging doses are low enough that routine repeat scans — such as an annual OPG, or a follow-up CBCT during implant planning — are considered safe. Your dentist and our radiologist will only recommend a repeat scan when it will meaningfully change the treatment plan.
What about pregnancy?
Dental X-rays are generally considered safe during pregnancy when clinically necessary, with a lead apron and thyroid collar used as standard protection. Always let our team know if you are pregnant so we can take any additional precautions.
Related: Learn about our 3D CBCT scan · Read our full FAQ