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Oral Health Library

Dental X-Rays

Dental X-rays help your dentist see problems that cannot be spotted simply by looking inside your mouth. They allow early diagnosis, safer treatment planning, and better protection for your teeth and gums.

🔍 What Can a Dental X-Ray Show?

Dental X-rays can reveal important details that are hidden below the surface, including:

• Tooth decay hidden under the enamel or between teeth.
• Infection at the root of a tooth.
• Bone loss caused by gum disease.
• The position of wisdom teeth.
• In children, the development of adult teeth beneath the gums.

🦷 Why Might I Need One?

Your dentist may recommend an X-ray if you have tooth pain or swelling, if decay is suspected between teeth, or if they need to assess the health of your gums and supporting bone.

X-rays are also useful before treatment such as braces, fillings, root canal treatment, implants, or extractions. They help identify problems early, when they are usually easier and less costly to treat.

📅 How Often Are They Taken?

How often you need dental X-rays depends on your age, oral health, dental history, and risk of decay or gum disease.

• Many people have routine check-up X-rays every 2–3 years.
• People with a higher risk of decay or gum disease may need them more frequently.
• Children may need X-rays to monitor developing teeth and jaw growth.

Important: Your dentist should only take X-rays when they are clinically necessary—not automatically at every visit.

🛡️ Are Dental X-Rays Safe?

Yes. Dental X-rays use a very small amount of radiation, and modern equipment and safety protocols keep exposure as low as reasonably possible.

For perspective: You receive more radiation from natural environmental sources during everyday life than from a routine dental X-ray. The dose is also much lower than that of many medical scans or a long-haul flight.

Dentists follow strict safety guidelines, use protective measures when appropriate, and recommend X-rays only when the benefit of diagnosis outweighs the very small radiation exposure.

🖼️ Types of Dental X-Rays

Small X-Rays: Bitewing and Periapical

These are the most common types. They show a few teeth at a time, along with the tooth roots, surrounding bone, and gum support.

Panoramic X-Ray (OPG)

A panoramic X-ray captures the whole mouth in one image, including all teeth, both jaws, supporting bone, wisdom teeth, and some jaw problems.

Medium-Sized X-Rays

These focus on one jaw or one side of the face and may be used when a more detailed view of a specific area is needed.

Digital X-Rays

Many dental practices now use digital systems. These display images instantly, allow the dentist to zoom in for detail, and generally use even lower radiation levels than traditional film X-rays.

🤰 What If I Am Pregnant?

Always tell your dentist if you are pregnant or think you might be pregnant.

Your dentist will avoid X-rays where possible, take extra care during the first three months of pregnancy, and only recommend an X-ray if it is essential for your dental care.

Remember: If an X-ray is necessary, your dental team can use appropriate protection and keep the exposure extremely low.

Have Questions About Dental X-Rays?

Speak to your dental team. They can explain why an X-ray is recommended, what it shows, and how it will help protect your oral health.