Low-Dose Digital X-Rays at Your First Visit: What They Show and Why They're Safe

Digital X-rays are often the quietest part of a first dental visit — and the most informative. Here's what they do, why we only take them when needed, and how modern sensors keep your exposure low.

What digital X-rays reveal that an exam can't

A visual exam catches a lot, but roughly a third of the tooth surface sits between neighbouring teeth where the eye can't see. Low-dose digital X-rays show:

• Cavities starting between teeth or under old fillings
• Bone levels around teeth (early signs of gum disease)
• Infections or cysts at the root tip
• Impacted or extra teeth, especially wisdom teeth
• The fit of existing crowns, bridges, or implants

Why 'digital' matters

Digital sensors need a fraction of the radiation older film X-rays required. A set of four bitewing images delivers roughly the same exposure you'd get from a short flight — and far less than a day of normal background radiation. Images appear on the screen in seconds, so there's no retake wait.

When we recommend them (and when we don't)

For a new patient with no recent records, we usually suggest a baseline set so we're not guessing about what's under the surface. If you bring recent X-rays from your previous dentist (ideally within the last 12–24 months), we often use those instead. Routine follow-up X-rays are spaced based on your risk level — not a fixed schedule.

If a 2D image isn't enough

For implants, difficult root canals, or impacted teeth, a 3D cone beam scan gives us a full view of bone and nerves. Our walkthrough on when a panoramic X-ray isn't enough explains the difference.

Pregnancy, kids, and opting out

Tell us if you're pregnant or trying — we'll typically defer non-urgent X-rays. For children, we take only what's needed for their stage of development. You can always ask us to pause and explain why an image is being recommended.

See all our imaging and treatment technologies or call 604-535-8835 to book.