Free DICOM Viewers for Dental CBCT and X-rays

A patient walks in with a CBCT disc from an imaging centre, or a referring colleague e-mails a folder of DICOM files, and the practice PC shows nothing but unreadable file names. This page is for dentists, clinic IT staff and dental students who need to open those images on an ordinary Windows PC or Mac without buying a radiology workstation.

The short answer: on Windows, MicroDicom DICOM Viewer is the quickest way to open a CBCT disc or X-ray series; on a Mac, OsiriX Lite is the usual starting point. If you want a 3D bone model you can print, 3DimViewer still does the job, although it has not been updated since 2017. Read the licence notes below before you use any of them in a practice: “free” rarely means free for clinical, commercial use, and none of these viewers is meant for diagnosis.

The short list

What “free” really means for a DICOM viewer

Four different arrangements hide behind the word “free”:

• Free for non-commercial use. MicroDicom is free for personal and educational use; professional use needs a commercial licence from the vendor, and a private dental practice is a commercial setting. The 3DimViewer installers carry a similar non-commercial condition, even though its source code is Apache 2.0.
• Demo or limited editions. OsiriX Lite is the demo of the paid OsiriX MD: every image carries a “NOT FOR MEDICAL USAGE” stamp, a series is limited to about 800 images at 512 x 512, and 3D tools are demo-level. The JiveX Personal Edition is limited in functions and time-limited. We list both as shareware (conditionally free).
• Open source. AMIDE and Aeskulap are GPL-2.0: free to use, but with no vendor support and no regulatory clearance.
• Not for diagnosis. MicroDicom states it has no CE mark or FDA approval and must not be used for clinical purposes. The JiveX manual says the viewer may not be used for reading or therapy planning. OsiriX Lite is not certified for primary diagnosis. Use these tools to look, discuss and teach; report from the software your imaging provider or scanner vendor supports.

MicroDicom DICOM Viewer

MicroDicom is a small native Windows program (Vista to Windows 11, 32- and 64-bit) that reads DICOM from any manufacturer, including DICOMDIR patient lists on discs. Version 2026.3 added 3D MPR with slab thickness and 3D volume rendering, so a CBCT can now be scrolled in three planes and viewed in 3D without another tool. It measures and annotates, anonymises studies, and exports slices to JPEG or PNG and scroll-throughs to MP4. Portable ZIP editions run on locked-down clinic PCs without installation. Limits: free only for non-commercial use, no dental tools (no panoramic curve, nerve tracing or implant library), and on a Mac it runs only through the vendor’s Wine-based package. Pick it if you are on Windows and mainly need to open, check and share what patients bring in.

OsiriX Lite

OsiriX Lite from Pixmeo is the Mac viewer most dentists have heard of. It imports discs and folders into a patient database, offers 2D viewing with bone presets and measurements, and includes 3D MPR, curved MPR for panoramic-style reconstructions and 3D rendering, all in demo form. It runs natively on Apple Silicon and Intel Macs with macOS 12 to 27. The catches are real: the “NOT FOR MEDICAL USAGE” stamp on every image, the series limit that can cut off a thin-slice CBCT, two DICOM nodes at most, and no Windows version. Choose it if you work on a Mac, want to review referral scans or teach CBCT navigation, or plan to evaluate OsiriX MD. Horos, a free open-source (LGPL-3.0) macOS viewer without the Lite series limit or stamp, is the usual alternative; it is not a certified medical device either.

JiveX DICOM Viewer (Personal Edition)

The JiveX DICOM Viewer comes from VISUS, a German PACS vendor. Without a licence key it runs as the Personal Edition, free for non-commercial use but reduced in functions and time-limited. Its “Mail Viewer” button searches inserted discs and USB sticks for DICOM images, and it offers linked series, synchronised scrolling, calibrated measurements and export to PNG or JPEG. It needs 64-bit Windows 10 or 11, and the manual asks for User Account Control to be switched off during installation; clear that with your IT support first. It cannot connect to a PACS. It suits side-by-side comparison of two studies; for daily use MicroDicom is simpler. If a disc came from a JiveX system, it may already carry the JiveX CD Viewer, which runs from the disc without installation.

3DimViewer

3DimViewer from 3Dim Laboratory in Brno turns a CBCT scan into something you can hold. It shows the volume in three planes and in GPU volume rendering, segments bone and teeth by density threshold, builds a surface model and exports it as STL. Version 1.4 added support for Planmeca multi-frame dental CT files. The problem is age: the last official installers, 3.1.1 for Windows and macOS, date from January 2017, and the vendor lists only Windows Vista, 7 and 8; the Mac package predates Apple Silicon and may not run on a recent Mac. Threshold models also need cleaning because of CBCT noise and metal scatter. Use it for teaching models and quick prints on a machine where it still runs; for maintained segmentation, see our open-source CBCT imaging platforms hub.

AMIDE

AMIDE is not a disc viewer for the front desk. It is a GPL research tool for volumetric data that loads DICOM (best when built with DCMTK), shows two scans fused, registers them with fiducial points and draws 3D regions of interest with statistics. For dental research that means lining up a baseline and a follow-up CBCT and reviewing differences slice by slice. Development resumed on GitHub with 1.0.7 in July 2026, but new versions are source-only: the latest Windows installers are 1.0.6 from 2022, and Mac users must compile it. Pick it for comparison studies, not for everyday viewing.

Aeskulap

Aeskulap is a GPL-2.0 DICOM viewer and PACS query/retrieve client for Linux. It opens compressed and multiframe DICOM, handles window/level presets and can pull studies from an archive node once the AE title, host and port are configured. It is discontinued: the last stable release, 0.2.1, is from 2006, and the repository was archived in May 2026. Debian 12 and Ubuntu 22.04 still package a later snapshot; newer releases dropped it. It shows slices only, with no MPR, 3D, export or anonymisation. Consider it only if a Linux PC is all you have and the package is available; otherwise Weasis, a free open-source viewer that also runs on Linux, or AMIDE are better maintained.

Opening a patient’s CBCT disc: Windows vs Mac

1. Check the disc first. Some discs carry a viewer burned on by the imaging system (JiveX systems do this). If it starts and shows the scan, you may not need to install anything.
2. Windows: copy the whole disc to a local folder, open MicroDicom and choose the DICOMDIR file in the disc’s root. Many dental discs store images several folders deep and list them only in the DICOMDIR, so opening a single image file often shows nothing useful.
3. Mac: drag the copied folder onto the OsiriX Lite database window. If a CBCT opens only partially, you have hit the Lite series limit; ask the imaging centre for a thicker-slice export or use Horos.
4. Linux: Aeskulap from the Debian 12 or Ubuntu 22.04 repositories, AMIDE, or Weasis.
5. Before sharing, anonymise the study (MicroDicom does this) so the patient’s name and ID leave the header.

How to choose

1. Start from the computer you have: Windows means MicroDicom (JiveX as a second option); Mac means OsiriX Lite or Horos; Linux means Aeskulap, AMIDE or Weasis.
2. Check the licence against your setting. In a private practice, MicroDicom and the JiveX Personal Edition are not free to use; budget for the commercial licence or use an open-source viewer.
3. If your scans are large thin-slice CBCT volumes, do not rely on OsiriX Lite alone because of the series limit.
4. If you need an STL model, add 3DimViewer or a maintained platform such as MITK; plain viewers only look.
5. For diagnosis, reports and implant planning, use the certified software supplied with the scanner or by your imaging provider. Our OsiriX Lite vs MicroDicom comparison covers the two most common choices in more detail.

FAQ

What is the best free DICOM viewer for dental CBCT?

On Windows, MicroDicom: it reads discs quickly, now has 3D MPR and volume rendering, and exports and anonymises images. It is free for non-commercial use only. On a Mac, OsiriX Lite or Horos.

Is there a free DICOM viewer for Mac?

Yes. OsiriX Lite costs nothing but is a demo edition with an image stamp and a series limit, so we class it as shareware (conditionally free). Horos is free and open source. 3DimViewer has a 2017 macOS build that may not run on current systems.

Is OsiriX Lite really free?

Downloading and using it costs nothing, but it is the demo of the commercial OsiriX MD: images are stamped “NOT FOR MEDICAL USAGE”, series are limited to about 800 images, and it may be used only for reviewing and scientific work.

Can a dental practice use MicroDicom for free?

No. MicroDicom is free for personal and educational use; commercial or professional use, which covers most private practices, needs a licence from the vendor.

Can I use a free CBCT viewer for diagnosis or implant planning?

No. MicroDicom, OsiriX Lite and the JiveX Personal Edition all state they are not for clinical diagnosis, and none of the viewers here includes implant planning tools.

Why does my CBCT disc show no images?

Open the DICOMDIR file in the root of the disc rather than a single file. Dental discs often keep images in nested folders that only the DICOMDIR lists.

Last updated: 28 September 2026 · DentSoftPro editorial team. Licence, version and platform details are checked against each developer's official documentation; none of the tools listed here should be treated as a certified medical device unless its vendor says so.