What Is a 3D CBCT Dental Scan, and When Do You Need One?

A cone beam computed tomography (CBCT) scan is a 3D X-ray of your teeth, jaw, nerves and sinuses. It takes less than a minute while the scanner rotates around your head. Dentists use CBCT when a standard 2D X-ray cannot show enough detail, such as when planning dental implants, locating impacted wisdom teeth or diagnosing complex root canal problems.

How a CBCT Scan Works

Standard dental X-rays capture a flat, two-dimensional image. A CBCT scanner rotates around your head and captures many images from different angles, which software combines into a detailed 3D model. Your dentist can then view your mouth from any angle and look at thin slices through the bone, much like turning the pages of a book.

• Scan time: usually less than a minute
• Position: you stand or sit still while the scanner arm rotates around you
• Comfort: quick and painless, with no impression trays

CBCT vs. Traditional Dental X-Rays

• Dimensions: standard digital X-rays are 2D. CBCT is 3D.
• Best use: 2D X-rays are ideal for routine checkups and finding cavities. CBCT is used when your dentist needs to see bone, nerves and roots in depth.
• Detail: CBCT shows the exact width and height of bone, the location of nerves and the shape of root canals.
• Radiation: a CBCT scan uses more radiation than a single 2D dental X-ray, but generally much less than a medical CT scan.
• How often: 2D X-rays are part of regular care. CBCT is taken only when the added detail will change your treatment.

When Do Dentists Use a CBCT Scan?

• Dental implant planning: CBCT measures bone and maps nerves and sinuses so an implant can be placed in the right spot. See how it fits into dental implant treatment.
• Wisdom teeth: a 3D view shows how impacted wisdom teeth sit next to the nerve in the lower jaw, which helps make removal safer.
• Root canals: CBCT can reveal extra canals, hidden infections and cracks that a 2D image may miss, which makes it valuable in endodontics.
• Bone grafting: 3D images show where bone is missing and how much grafting is needed.
• Complex cases: unexplained pain, cysts, jaw concerns and teeth that do not show clearly on standard X-rays.

Is a CBCT Scan Safe?

Yes, when it is used for the right reasons. Dental CBCT scanners are designed for imaging the teeth and jaws and use a lower radiation dose than a conventional medical CT scan. Dentists follow the principle of keeping radiation as low as reasonably achievable, so a CBCT scan is only taken when the 3D information will help diagnose or plan your treatment. If you are pregnant or think you might be, let us know before any imaging.

Why In-Office 3D Imaging Matters

Auburn Dental Center has 3D CT scanning right in our Auburn office, so you do not need a separate trip to an imaging center. That means:

• Faster answers, since your scan can often be taken during the same visit
• More precise planning for implants, extractions and root canals
• A clearer picture for you, since we can show you the 3D images and explain what we see

If you are comparing ways to replace missing teeth, our guide to dentures, implants and implant-supported dentures can help you decide.

What to Expect During Your Scan

1. Remove glasses, earrings, hair clips and any removable dental appliances.
2. Stand or sit in the scanner and rest your chin in position.
3. Hold still while the scanner rotates around your head.
4. Review the 3D images with Dr. Herr and talk through your treatment options.

Frequently Asked Questions

How long does a CBCT scan take?

The scan itself usually takes less than a minute. The whole process, including positioning, takes just a few minutes.

Does a CBCT scan hurt?

No. The scan is quick and painless. You just need to stay still while the scanner rotates around you.

Do I need a CBCT scan for a dental implant?

Most implant cases benefit from one. A 3D scan is the most accurate way to measure your bone and avoid nerves and sinuses when planning where an implant will go.

Is CBCT the same as a medical CT scan?

Both create 3D images, but a dental CBCT scanner is built for the teeth and jaws and typically uses a lower radiation dose than a conventional medical CT.

Get a Clear Picture of Your Smile

Auburn Dental Center offers in-office 3D CBCT imaging at 1310 Atlanta Hwy NW in Auburn, GA, for patients from Winder, Dacula, Bethlehem and across Barrow County. Call (770) 339-4690 or schedule your appointment online.