Does the intraoral scanner hurt?
Not at all. The scanner is a small handheld wand that captures images with light. No contact pressure, no materials inside the mouth, no discomfort.
2026-04-10 · 5 min
Intraoral Scanner: What It Is and Why It Transforms Your Dental Experience
An intraoral scanner is a handheld device that captures thousands of images per second of the inside of the mouth and integrates them in real time to generate a three-dimensional digital model of the teeth and gums. Unlike traditional silicone or alginate impressions, which required placing a tray filled with pasty material in the mouth and waiting several minutes for it to set, the intraoral scanner produces a high-precision model in a matter of minutes, with no discomfort, no risk of gagging, and the ability to review the result on screen immediately.
The technology behind the intraoral scanner combines structured light or laser with three-dimensional reconstruction algorithms. The result is a point cloud that the software converts into a polygonal model of the dental arches with accuracy to tenths of a millimeter. This level of precision is critical for fabricating restorations such as crowns, bridges, veneers, and inlays using CAD/CAM systems, which design and mill the piece directly from the digital model, eliminating the possibility of distortions inherent in the plaster process.
One of the most important applications of the intraoral scanner is in clear aligner orthodontics. At Atria Sampaio, the Invisalign process begins with a scan that generates the digital model sent directly to Align Technology for ClinCheck planning. This allows the complete sequence of tooth movements and the projected final result to be viewed on screen before any aligner is fabricated. Digital impressions have completely replaced physical impressions in this workflow, improving both patient experience and treatment precision.
In implantology, the intraoral scanner is used in both the planning and restoration phases. In planning, it is combined with Cone Beam 3D CT to generate a merged model that allows the surgical guide to be designed with maximum precision. In the restorative phase, it allows digital impressions of the osseointegrated implant to be taken without physical transfer pieces or conventional impressions. This fully digital workflow reduces the margin for error and shortens laboratory fabrication times.
For digital smile design, the intraoral scanner is the starting point of aesthetic planning. The digital model obtained allows a virtual wax-up to be performed, the result of veneers or crowns to be simulated, and that simulation to be shared with the patient in the same appointment. This preview capability transforms the diagnostic consultation into an interactive experience where the patient participates in designing their smile. At clinics like Atria Sampaio in Vitacura, the scanner is part of the standard workflow for these treatments.
From the patient's perspective, the main advantage of the intraoral scanner is comfort. Those who have had unpleasant experiences with traditional impressions (choking sensations, gag reflex, material that does not set properly) find the scanner a radical improvement. Additionally, the digital model is permanent and can be consulted and compared at future check-ups, adding diagnostic value over time. The scanner is a qualitative change in how dental care is experienced.
Frequently asked questions
How long does an intraoral scan take?
A full-arch scan typically takes between 2 and 4 minutes. Both arches and the bite registration can be completed in under 10 minutes.
Is the intraoral scanner more accurate than traditional impressions?
Yes. Digital scans achieve accuracy to tenths of a millimeter and eliminate distortions from material shrinkage, tray movement, or improper setting that can occur with silicone or alginate.
What treatments use the intraoral scanner?
It is used for Invisalign planning, crown and veneer fabrication, implant restorations, digital smile design, and orthodontic monitoring, among others.
