Intraoral scanner – how to choose one? A guide for clinics and labs

Today the intraoral scanner (IOS) is the starting point of the entire digital workflow: from the digital impression through CAD design to 3D printing or milling. A well-chosen scanner shortens the appointment, improves patient comfort and eliminates the errors of conventional impressions. A poorly chosen one frustrates the team and ends up in a drawer. Below are the criteria that really determine day-to-day work.

1. Which indications will you scan for?

Single crowns, inlays/onlays and splints are the basic range that any modern scanner can handle. Full arches, implant-supported restorations and edentulous cases require higher-end equipment and proper image-stitching algorithms. If your clinic performs implant treatment with All-on-X type restorations, consider a device that combines intraoral scanning with photogrammetry, such as the Aoralscan Elite – a 2-in-1 system designed specifically for implant positioning in edentulous cases.

2. Scanning speed and fluency

The declared arch scanning time (e.g. about 25 s per arch with the Aoralscan 3) says a fair amount, but fluency matters more: does the scanner "lose" tracking when you change the angle, how does it cope with moisture and saliva, and how often do you have to go back to missed areas? Anti-fog protection and an AI assistant that highlights unscanned areas save more time in practice than a few seconds' difference on a spec sheet.

3. Accuracy – but measured across the whole process

Single-frame accuracy is one thing; full-arch repeatability is another. Check how the scanner captures subgingival preparation margins, edges and contact points. A good test before buying is to scan the same model several times and compare the files in CAD software: the scatter will show the real repeatability.

4. Wired or wireless?

Wireless scanners such as the Aoralscan 3 Wireless or Aoralscan Elite Wireless give you freedom of movement around the patient and a tidier workstation. The prerequisites are a stable Wi-Fi network and charging discipline: about 2 hours of continuous operation on a single charge is enough for a typical clinic day, but with intensive scanning it is worth having a second battery. The wired version remains the simplest, maintenance-free option.

5. Open files and integration with the lab

The scanner should export open formats (STL, PLY, OBJ) so that the lab can work with any software. Solutions such as the RAYiOS 2 focus on an open ecosystem and powder-free scanning, while SHINING 3D scanners additionally integrate with the Dental Cloud platform and AccuFab printers. If you are planning in-clinic 3D printing, check that the scanner, software and printer work together in one seamless workflow.

6. Ergonomics, tips and hygiene

The scanner's weight (e.g. 240 g for the Aoralscan 3), balance and tip size determine comfort during longer procedures and when working with patients with limited mouth opening. Interchangeable tips in two sizes (standard and mini) and the option of autoclave sterilization are features that are easy to overlook when comparing specifications, but they matter every day.

7. Software and long-term costs

Check whether the software is licensed with a one-time fee or by subscription, and which modules are included: orthodontic simulation, temporary crown design, model creation. On top of the device price, add tips, a possible second battery, updates and team training.

Intraoral scanners in practice – where to start?

The best test is scanning under real clinical conditions. IMMT organizes demonstrations of SHINING 3D and RAY scanners and helps you choose a configuration based on the indications you work with most often. Browse our full range in the intraoral scanners category or write to us to arrange a demo.

Frequently asked questions

Does an intraoral scanner replace impressions 100%?
For most indications – yes. Exceptions are deep subgingival preparations with bleeding and some edentulous cases: here the solution is photogrammetry or an additional conventional impression.

How long does it take to learn to scan?
A team usually masters the basic technique within a few days. Full fluency with arches and implants comes after a few weeks of regular work.

Does the lab need to have the same system?
No, as long as the scanner exports open STL/PLY files. It is worth confirming this before buying.