Calibrated dental arch images and jigs

A processing system comprising:

• a) a computer processor,
• b) non-transitory computer memory comprising a database and one or more computer programs,
• wherein said database comprises:
• i) intraoral scan data that is from an intraoral scanner scanning a dental arch calibration jig:
• A) on, and optionally attached to, at least part of an edentulous area of a dental arch of a subject that has a plurality of scan bodies attached to dental implants,
• B) attached to a stackable base template that is attached to a stackable implant guide template, where said stackable base template is on, and attached to, said at least part of said edentulous area of said dental arch of said subject, or
• C) attached to said stackable implant guide,
• wherein said intraoral scan data comprises a first library of images of said calibration jig, wherein at least some of said images of said calibration jig further comprise an image of at least one of said scan bodies, and
• ii) 3D calibration scan data that is from a 3D scanner scanning said dental arch calibration jig, or replica thereof, wherein said 3D calibration scan data comprises a 3D dental arch calibration jig image,
• wherein said one or more computer programs, in conjunction with said processor and database, are configured to
• i) stitch together at least some of said first library of images of said calibration jig to generate a stitched intraoral scan 3D jig image of at least a first region of said dental arch calibration jig, wherein said stitched intraoral scan 3D jig image comprises a plurality of stitching errors;
• and
• ii) spatially align at least a portion of said stitched intraoral scan 3D jig image with said 3D dental arch calibration jig image to generate a calibrated dental arch image.

A kit or system comprising:

• a) a calibration jig shaped to match the curvature of a dental arch of a subject, and having an outer surface bearing a non-repeating 3D pattern;
• and
• b) a computer memory device, wherein said computer device comprises:
• i) intraoral scan data that is from an intraoral scanner scanning a dental arch calibration jig:
• A) on at least part of, and optionally attached to, an edentulous area of a dental arch of a subject that has a plurality of scan bodies attached to dental implants,
• B) attached to a stackable base template that is attached to a stackable implant guide template, where said stackable base template is on, and attached to, said at least part of said edentulous area of said dental arch of said subject, or
• C) attached to said stackable implant guide,
• wherein said intraoral scan data comprises a first library of images of said calibration jig, and wherein at least some of said images of said calibration jig further comprise an image of at least one of said scan bodies, and/or
• ii) 3D calibration scan data that is from a 3D scanner scanning said dental arch calibration jig, or replica thereof, wherein said 3D calibration scan data comprises a 3D dental arch calibration jig image.