Oral digitalization is not about stacking devices on one desk. It is about making facial scan, intraoral scan and CBCT data speak in the same coordinate system. The first step is to understand what each dataset is responsible for.
1. Three datasets, three roles
3D facial scanning records soft-tissue form and facial proportions; intraoral scanning records the dentition and occlusal surfaces; CBCT provides information on bone tissue and deep structures such as tooth roots. None of the three replaces the others; registration aligns them in the same space.
The CASZM oral and maxillofacial range imports CBCT (DICOM) data through software and uses it together with the 3D facial model. CBCT images are acquired on devices with the appropriate capability; this article discusses the data import and application workflow, not a substitution of devices.
2. Check the data before importing
Once the DICOM data arrives, first confirm that the series is complete, that slice thickness is consistent and that no slices are missing, and check the patient identifier and acquisition date. If the data itself has problems, no amount of registration precision will help.
Facial scanning should be done in a natural head position with a neutral expression, and the capture date recorded. If the CBCT and the facial scan are far apart in time, or there was significant swelling or weight change in between, note it in the record.
3. Registration: coarse first, then fine, and keep a record
Registration usually starts with a rough alignment, then refines it on stable anatomical regions. Which regions take part, and whether to exclude highly mobile areas, should follow the software workflow and clinical habit.
After registration, save the registration result and the data versions used. Only then can a re-registration at follow-up show whether a difference comes from a patient change or from a change in operating protocol.
4. Measurement and communication: explaining bone-to-surface relationships
The 3D Digital Facial Scanning System supports bone-surface measurement, cephalometric analysis and digital smile design. Measured values support communication and plan discussion; the specific diagnosis and treatment plan remain with the clinician.
You do not need to show all the data at once. Two or three key views built around the chief complaint are easier for patients to understand than a screen full of cross-sections.
5. Putting the workflow into practice
| Step | Input | Output | Notes |
|---|---|---|---|
| Facial scan capture | Patient's face | 3D model and texture | Natural head position, neutral expression, hair tied back |
| Intraoral scan capture | Dentition and occlusion | 3D model of the dentition | Follow the intraoral scanner's procedure |
| CBCT import | DICOM series | Readable image data | Check series completeness and patient identifier |
| Registration | Facial scan model + CBCT | A shared coordinate system | Save the registration result and data versions |
| Measurement and design | Registered model | Measurements, design drafts | Record the landmarks and versions used |
| Communication and archiving | Reports, screenshots, models | Case record | De-identify before any display |
6. Three common pitfalls
- Treating registration as automatic: after automatic registration, key regions still need a manual check that they are aligned.
- Ignoring the time gap between datasets: if the facial scan and CBCT are too far apart, soft-tissue status may already have changed.
- Keeping screenshots only: if the registration result and the raw data are not saved, the case cannot be reviewed at follow-up.
Related pages: 3D Digital Facial Scanning System, MVS-P6HD, MVS-C6HD, MVS-M6HD, MVS-C4D, oral and maxillofacial applications.
This article describes product functions and workflows and is not medical advice; specific configurations, metrics and deliverables are subject to the product version and contract.