If your case is stuck while loading the Design stage (for example, the loader is stuck at 40%), please check your network connection. If the problem persists, please restart your case from the beginning.

Yes. You can use the undo/redo buttons available in the interface at any time.

Yes. In the Manufacturing Settings, you can set the thickness of the border reinforcement to make it compatible with your milling tool.

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Yes. In the Design step, you can adjust antagonist contacts in real time by smoothing or deforming them using the “Antagonist Contacts” slider.
The contacts are displayed in color through the Colormap panel, helping you fine-tune the occlusion of your prosthesis.

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Yes. The minimum thickness for the selected material is maintained throughout design. Circle One alerts you if the prosthesis is not insertable at the chosen minimum thickness, and offers three options: auto-adjust, manual correction, or continue without correction.

You can adjust the minimum thickness in the Manufacturing Settings or in “My Design Preferences.” Thin areas are visualized in the Colormap panel.

Yes. Circle One automatically detects the cervical margin line.
You can then refine it manually in just a few clicks to match your clinical preferences.
This takes place during the Margin Line & Insertion Axis review step.

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Circle One offers two occlusion options: the one from your intraoral scanner and a recalculated occlusion generated automatically from the bite registration and arch collision analysis. You can compare both and choose the one that best fits your situation.

Yes. Once your manufacturing files are generated, they remain available in your case details.
You can download them as many times as you need, at no additional cost.

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Once generated, your production files are available for download.
They include:
- the modeled prosthesis in STL format
- the finish line in PTS format (useful for certain manufacturing methods, primarily milling)

All export files are automatically oriented according to your chosen production method (milling or 3D printing).

You can download them as a ZIP file or in OCM (Circle One Manufacturing) format.
The OCM format lets you automatically launch your manufacturing software upon download when the Circle One Manufacturing module is installed.

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Yes. The bur diameter (tool compensation) is defined when configuring your machine in “My Equipment.” Circle One uses this during modeling to ensure your design is perfectly millable.

This option also applies to printing settings (0 mm by default, 0.3 mm recommended) to avoid resin residue in sharp intaglio areas.

If no activity is detected for a few minutes, the case automatically closes. This helps manage server load and keep Circle Credit costs optimized.

Yes. You can use the undo/redo buttons available in the interface at any time.

Not yet. Your design cannot be saved at No, a validated design can't be reopened or edited. To start over from an existing case, use the dot menu on the case card and select "Create a new case from patient files": a new case is created with the same scans, letting you restart the design from scratch.

Yes. You can freely adjust the automatic proposal using the available tools.
Thanks to our Collaborative AI, Circle One updates the model in real time and maintains key parameters such as: distance to adjacent and opposing teeth, insertion axis, minimum thickness, functional balance.

Every adjustment is simulated instantly, helping you keep a stable and reliable design as you refine it.

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The automatic proposal is generated by analyzing your scans and taking several key parameters into account, including tooth anatomy, occlusion, proximal contacts, minimum thickness requirements, and manufacturing constraints.

Our Collaborative AI maintains occlusal contacts, insertion axis, and functional balance in real time, helping you obtain a design that is both functional and easy to manufacture.

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From your dashboard, click “My Cases” to view the full list of your cases.
You can sort or search for a specific case using the filters or the search bar.

After you approve your design, the case summary opens automatically. If you want to review it, simply click the “View” button on the case card.

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You can design crowns, inlays, onlays, overlays, and veneers. More prosthetic types will be added soon. For now, only one product per case is supported.

Circle One works fine with a standard-definition scan.

A scan with too much detail (HD) can, in some cases, slow down the loading of the case.

Standard quality offers the best balance between model accuracy and processing performance.

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Yes. The prescan is available in the Design step and keeps a reference of the tooth’s original anatomy. Our AI can generate an interpolation between the automatic proposal and the prescan shape, so you can choose the result that suits you best.

Bite scans are optional but highly recommended: they enable accurate occlusion analysis and improve the calculation of element orientation.

For optimal efficiency, here are our recommendations:

- For a full arch, you can create one bite scan per hemi-arch,
- For a hemi-arch, center the bite scan on the preparation and scan the adjacent teeth,
- Capture the bite scan after preparation,
- Do not scan soft tissues: if they appear on the bite scan but not on the main scan, this will create areas without overlap.

If your scanner does not export a bite scan, you can usually enable this option in the export settings.

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Circle One supports STL and PLY
DCM files (3Shape DCM) are not supported at this time.

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For each case, the Circle Credit cost is shown in the top-right corner of the case. Credits are consumed when the design is validated.

Note: restarting a validated design will consume an additional Circle Credit.

Circle Credits are our flexible credit system. One designated and exported prosthetic tooth costs 1 Circle Credit.

To purchase Circle Credits, contact your distributor. All unused Circle Credits remain available indefinitely.

One Click Manufacturing automatically launches your manufacturing software as soon as your production files are downloaded. It is provided as a small application to install on your computer.

Learn more: About One Click Manufacturing

Yes. Circle One automatically generates the files required for your chosen production type (milling or 3D printing). You can work with any milling machine and/or 3D printer, as well as the materials of your choice.

Circle One is compatible with most 3D printers and milling machines, generating files for the main equipment on the market.

You can also automatically open your production files in your manufacturing software using our OneClick Manufacturing module. Learn more: oneclickmanufacturing.circle.dental

Circle One works with all intraoral scanners on the market and supports standard file formats, allowing seamless integration with your existing equipment.

Some devices offer advanced integration for increased efficiency and an even smoother user experience. Check out our “Partners” section

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No. Circle One runs directly in your web browser, no installation required, and all calculations are performed on our servers.

For the best experience, we recommend using Google Chrome.

A standard computer (PC or Mac) with a stable internet connection is enough. Some features may not be available on tablets or mobile devices.

For the exact minimum system requirements, refer to the user manual

Yes. You can save your design preferences (minimum thickness, manufacturing settings, etc.) in “My Design Preferences,” accessible from your profile.

These settings will be automatically applied to all future cases, letting you standardize your workflow to match your preferences.

Yes. Your data are securely stored for 1 year, allowing identical re-fabrication if needed.

All files are encrypted and hosted on ISO 27001-certified servers.

From your Circle One account, go to the practice settings, then to the User Management section.

You can invite a dentist or assistant using the same procedure, regardless of their role.

If the person already has a Circle One account: they will receive an invitation to join your practice.

If the person does not yet have an account: an invitation will be sent to create an account, then automatically join your space.

A practice can have multiple accounts: dentist and assistant accounts.

To create and link an assistant (or dentist) account to your practice, go to the “My Practice” page in the “My Practice Users” section and click on “Invite a user.”

Assistant accounts have access to all cases created by any dentist within the same practice.

After signing up, you received an email inviting you to set your password.

Log in to your Circle One account here https://one.circle.dental/ using the email address and password you created.

If you forgot your password, simply click “Forgot password” to reset it.