A 3D dental X-ray, or cone beam computed tomography (CBCT), creates a three-dimensional image of the teeth, jaws and nearby structures. It is used when a conventional two-dimensional X-ray does not provide enough information for a clinical question.
How is CBCT different?
A conventional dental X-ray shows a two-dimensional view. A CBCT unit takes multiple images while rotating around the patient, and a computer reconstructs a 3D model that can be viewed from different directions.
When may it be needed?
- dental implant planning;
- assessment of impacted or complex wisdom teeth;
- complex root canal diagnosis;
- jaw and eruption problems;
- trauma, cysts or other changes;
- orthodontic or surgical planning.
The scan should not be taken routinely. It is chosen when the additional information may affect diagnosis or treatment.
What happens during the scan?
The patient stands or sits while the head is positioned gently. Glasses, jewellery and other metal objects are removed. The unit rotates around the head for a few seconds. The examination is painless and does not take place in a closed tunnel.
Is CBCT safe?
CBCT uses ionising radiation. The dose is generally lower than a medical CT but higher than a simple dental X-ray. The scan should therefore be justified and use the smallest appropriate field. Tell the team about pregnancy or possible pregnancy before imaging.
What can the dentist see?
The scan can show bone height and width, root anatomy, infection and the location of the nerve canal or sinus. It supports implant planning, oral surgery and selected root canal cases.
Frequently asked questions
Is CBCT taken for every new patient?
No. Need depends on symptoms, examination and the treatment plan.
Is contrast material used?
Routine dental CBCT normally does not require contrast material.
How should I prepare?
No special preparation is usually needed. Bring information about previous images and remove metal objects around the head and neck.
For a 3D dental X-ray in Tartu, contact the Denslux clinic.
