How to Export DICOM from Your CBCT for Surgical Guide Design

Every guide-design service — ours included — starts from the same raw material: your CBCT volume as a DICOM series. Roughly one in five cases we receive needs a re-export before planning can start, and it's almost never the scan's fault; it's the export settings. This guide fixes that in five minutes, whatever machine you own.

Why it must be DICOM — and what DICOM actually is

DICOM (Digital Imaging and Communications in Medicine) is the universal medical-imaging format. A CBCT study in DICOM is a stack of axial slices — one thin cross-section per file — that planning software rebuilds into the 3D volume where implants are positioned and guide sleeves are aligned. That is why a screenshot, a PDF report or a panoramic JPG cannot be used: they are flat pictures of the volume, not the volume itself.

The clinical foundation here is settled: the American Academy of Oral and Maxillofacial Radiology recommends cross-sectional imaging for the assessment of all implant sites, with CBCT as the imaging method of choice.¹ Guided surgery simply extends that same dataset from diagnosis into execution.

The universal export recipe (any CBCT software)

1. Open the study and confirm the arch of interest is fully inside the field of view — including the teeth that will support the guide.
2. Go to File → Export / Save As / Send and pick the option called "DICOM set", "DICOM series", "multi-file DICOM" or "DICOM volume".
3. Settings: uncompressed or lossless, all slices, original voxel size. Avoid "single file (report)" and any format with the vendor's own extension.
4. Export into an empty folder, then compress the folder into a single .zip.
5. De-identify: if the export dialog lets you edit patient info, replace the name with your internal reference code before sending anywhere.

Vendor quick-notes

Menu names vary by software version — the constant is the phrase DICOM set/series. When in doubt, your unit's manual or dealer hotline answers in minutes.

Resolution and dose: you don't need a "maximum quality" rescan

A common worry is that the existing scan is "not high-res enough" for guide design. The evidence points the other way: in phantom studies of implant-planning image quality, raising exposure parameters did not automatically improve diagnostic quality — acceptable planning quality was achieved at settings below the manufacturer defaults, at lower patient dose.² In practice, any modern CBCT at standard implant settings (voxel ≤0.3 mm, arch fully in FOV, no motion) is more than sufficient. Rescan only for motion artifact or a cut-off arch — not for pixels.

The five mistakes that delay cases

1. Single-image exports — one JPG/PNG "slice" or a PDF report instead of the series.
2. Vendor project files (.pln, .vol, .ct and friends) — they open only in that vendor's viewer.
3. Lossy-compressed exports — compression artifacts blur the exact structures the plan depends on.
4. Cropped field of view — the implant site is there but the guide-supporting teeth aren't.
5. Loose files instead of a ZIP — 400 slices uploaded one by one, with a few missing. Zip the folder.

Bonus tip: if you also have an intraoral scan (STL), send it with the DICOM — tooth-supported guides seat on scan data. You can sanity-check any STL in our free browser STL viewer first, and if you're weighing guided surgery at all, the accuracy numbers are summarized in our evidence review.

Frequently asked questions

References

Peer-reviewed sources indexed in PubMed. DOI links point to the version of record.