Scan body as reference geometry in the digital workflow

English technical abstract

This article develops the idea that the scan body represents the otherwise invisible implant within the digital workflow. An intraoral or laboratory scanner does not read the implant’s internal connection. It reads the external scan-body geometry, which CAD software then compares with the library file.

Scan-body quality therefore cannot be assessed by material or screw compatibility alone. The geometry must also provide sufficient height, surfaces, axial definition and orientation features for reliable recognition and stable library alignment*.

referencemesh*libraryscanbodyworkflow

What the article covers and how to read it

Reference rather than objectA scan body does not transfer anatomy; it transfers spatial information about the implant or abutment.

Accuracy and precision*Accuracy describes closeness to a reference value, while precision describes measurement repeatability. Both matter in CAD/CAM workflows.

Library continuityA good scan-body design should support not only scanning itself but also subsequent matching to the library file.

Practical verificationWhen the result is uncertain, check the scanning strategy, scan-body exposure, library type and the software alignment result.

Relevance for the laboratory, dental practice and technical support

With multiple implants across an arch, verify that the upper orientation surfaces of each scan body are fully visible.
If the software is uncertain when matching the library, the product itself may not be the problem. Possible causes include an incomplete mesh, reflections, saliva, an unfavourable angle or insufficiently readable geometry.
This page serves as a bridge between the scan-body product page and articles on full-arch* scanning.

Limitations and cautious interpretation

This is editorial commentary building on an in-vitro topic. It should not be interpreted to mean that one universal scan-body shape is best for all scanners and indications.

Original source article

Original title: The Influence of Shape and Size of ScanBodies: An In Vitro Study on Accuracy and Precision

Download the original PDF

The source document remains available so readers can verify the original wording, methodology and results.

PDF

Related IPD pages and workflows

Glossary of abbreviations and specialist terms

An asterisk next to a term in the text refers to its explanation below.

full-arch: Full-arch means the entire dental arch, typically a scan or reconstruction of a complete edentulous arch.
precision: Precision describes repeatability, the ability to obtain similar results when a measurement is repeated.
alignment: Alignment is the registration or matching of a scanned 3D model to reference library geometry in CAD software.
mesh: A mesh is a 3D network of points and surfaces generated during digital scanning.