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Intraoral scanners as tracking devices: A dental protocol for assessing volumetric changes between intraoral scans
Marta Revilla-León1, Jonathan M Zeitler2, John C Kois3
1Affiliate Assistant Professor, Graduate Prosthodontics, Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Wash.; Faculty & Director, Research and Digital Dentistry, Kois Center, Seattle, Wash.; and Adjunct Professor, Department of Prosthodontics, Tufts University, Boston, Mass.
Abstract:
Intraoral scanners (IOSs) are digital data acquisition technologies that ease the recording of virtual diagnostic casts. Some IOSs have a specific software tool to assess volumetric changes between 2 scans acquired on the patient at different times. The scans are superimposed and volumetric differences between both meshes are reported. However, these software tools may be limited to scans captured only by the IOS of the same manufacturer. The present manuscript describes a protocol for comparing volumetric changes between 2 scans recorded using any IOS. Additionally, 1 of the scans is divided into 3 sections to minimize the alignment distortion and maximize the evaluation of the volumetric changes.
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