What does the scan record?
Optically accessible surfaces of teeth and gums.
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What is a digital impression?
An intraoral scan uses a small camera to record accessible surfaces of teeth and gums. It creates a digital model that can replace a conventional impression for suitable clinical purposes.
For dental trainees & teams
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Surfaces are recorded digitally
A scanner is moved inside the mouth. Many optical images are combined into a three-dimensional surface model.
A model for further work
Depending on the treatment, the digital model can support planning and fabrication. It cannot provide every kind of information.
Not an X-ray into the tooth
An optical scan shows surfaces. It does not show the tooth interior, roots inside bone or hidden inflammation as X-ray imaging can.
At a glance
What can the model support?
Suitable steps in planning and fabricating dental restorations or appliances.
Does it replace X-rays?
No. It does not show hidden internal structures.
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Often confused
Surface model or X-ray volume?
Both can look three-dimensional but provide different information. An intraoral scan is not a CBCT scan.
Quick answers
Does an intraoral scan use X-rays?
No. An optical intraoral scan uses light to record surfaces.
Does it always replace a conventional impression?
That depends on the treatment, situation and requirements. Digital methods are not automatically the right choice in every case.
Is the model already a treatment result?
No. It is a working basis. Examination, planning and professional checks remain necessary.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
What could a digital model contribute to my treatment planning?
The profile describes digital analysis as a support for individual planning.
Whether a digital impression fits the plan is considered individually.
Discuss your treatment planChoose an appointment on DoctolibLearning for dental trainees & teamsUnderstand clinical terms and build your knowledge
Build on the simple explanation with clinical terms, key distinctions and a knowledge question.
- Optical capture
- Recording accessible surfaces using light.
- Digital model
- A computer-based representation of the recorded shape.
- Impression
- Recording a shape for a model, by conventional or digital means.
Know the difference
A surface model is not an image of internal tooth or bone structure.
Sources for further learning
Sources and context
Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.