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Trueness and Precision of Economical Smartphone-Based Virtual Facebow Records

Now online in the Journal of Prosthodontics, a report on the trueness and precision of virtual facebow records using a smartphone as a 3D face scanner.

Compared to bulky and expensive industrial scanners, the smartphone could be a cost-effective and user-friendly alternative for face scans.

For this study, a virtual facebow was attached to the maxillary arch of two subjects, and a face scan was performed using a smartphone with a 3D scan application (Hege 3D scanner). The virtual facebow records were superimposed to a CBCT head scan from the same subject by matching the face scan to the face 3D reconstruction from CBCT images.

Trueness was assessed as the mean deviation (linear and angular) between virtual facebow records and the CBCT record, while the precision was assessed as those between each two virtual facebow record.

Results showed that the maxillary position can be reproducibly recorded with an average trueness of 1.14 mm and precision of 1.09 mm. These data, combined with the short scanning time, suggest that use of a smartphone 3D scanner in the dental clinic is promising.

Li J, Chen Z, Decker AM, Wang H‐L, Joda T, Mendonca G, Lepidi L. Trueness and Precision of Economical Smartphone‐Based Virtual Facebow Records. J Prosthodont 2021. Accepted Author Manuscript. https://doi.org/10.1111/jopr.13366

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