Historical scan reference for intraoral scans

Abstract

A method of referencing historical scan data during an intraoral scan session includes receiving, by a processing device, a plurality of intraoral images of a dental part during the intraoral scan session; determining, by the processing device, that a first intraoral image of the plurality of intraoral images does not satisfy a registration criterion relative to any other intraoral image of the plurality of intraoral images; determining, by the processing device, a historical template of the presence of the tooth part, the historical template being a virtual model of the tooth part generated from additional intraoral images taken during a previous intraoral scanning session; and registering, by the processing device, a first intra-oral image of the plurality of intra-oral images to one or more remaining intra-oral images of the plurality of intra-oral images in a three-dimensional space according to the historical template, the first intra-oral image being associated with a first region of the tooth part, the first region being non-overlapping with a second region of the tooth part, the second region is associated with one or more remaining intraoral images. By adopting the scheme of the invention, the intraoral scanning efficiency and accuracy can be improved.

Description

[0001] This application is a divisional application with the application number 2017800413684 and the invention title "Historical Scanning Reference for Intraoral Scanning". technical field [0002] Embodiments of the present invention relate to the field of intraoral scanning, and in particular to systems and methods for improving the efficiency and accuracy of intraoral scanning. Background technique [0003] In restorative and orthodontic surgery, obtaining a three-dimensional (3D) model of the tooth sites in the oral cavity is the initial step performed. In orthodontic surgery, it is important to provide a model of one or both jaws. 3D models created by using 3D modeling scanners (eg, wands) help in the precise creation of molds for corrective work. Scans are often performed to receive additional treatments when patients are checked for progress updates, or sometimes during routine health appointments. From a historical perspective, each scan for a particular patient i...

AI Technical Summary

Problems solved by technology

Also, many scanners have difficulty initializing after interruption due to insufficient overlap between images or excessive wand movement

These limitations are frustrating and require extra time to get work done

Images