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US 12,653,648 B2Granted
Gauge for verification of 3-d images
AssigneeDENTSPLY SIRONA Inc.
InventorsJeremy E. Jo, Michael K. Caselli
Life of this patent
Estimating the term…
Abstract
A verification gauge for use in improving the accuracy of a 3D scan. A bar of adjustable length has a first and second ends that can be affixed between two points of the oral-cavity. The bar is scannable and has a visual indicia thereon to verify and determine the length and relative position between the two points.
Claims8
A gauge to verify the accuracy of an intra-oral scan of the oral cavity of a patient, comprising:
- a straight bar extending from a first end to a second end along a straight line, the bar formed by a housing defining a longitudinal track including an open end and a closed end and an arm that is slidable within the longitudinal track between a plurality of different positions, the arm including the first end and the housing including the second end, a terminal end of the arm opposite the first end configured to contact the closed end of the longitudinal track in a first one of the plurality of positions and be spaced from the closed end of the longitudinal track in other ones of the plurality of positions such that the bar has an adjustable length, the bar being removably affixable at each of the first and second end between two points in the oral cavity, a first one of the two points corresponding to a location of the first end of the bar and a second one of the two points corresponding to a location of the second end of the bar;
- and
- visible indicia on the bar for identifying a distance between the two points, the visible indicia including a Vernier scale;
- said bar being scannable by the intra-oral scan;
- wherein a measurement of the distance between the two points is thereby verified by the visible indicia on the bar and by the scan of said bar.
2 more elements
A method of improving the accuracy of a digital image of the oral cavity of a patient, comprising:
- making a plurality of first intraoral scans of the oral cavity;
- using said plurality of first oral scans to form the digital image of at least one portion of the oral cavity;
- providing a straight bar extending from a first end to a second end along a straight line, the bar formed by a housing defining a longitudinal track including an open end and a closed end and an arm that is slidable within the longitudinal track between a plurality of different positions, the arm including the first end and the housing including the second end, a terminal end of the arm opposite the first end configured to contact the closed end of the longitudinal track in a first one of the plurality of positions and be spaced from the closed end of the longitudinal track in other ones of the plurality of positions such that the bar has an adjustable length, the bar being removably affixable at each of the first and second end between two points in the oral cavity, a first one of the two points corresponding to a location of the first end of the bar and a second one of the two points corresponding to a location of the second end of the bar,
- said bar having visual indicia comprising a Vernier scale to identify the distance between said two points;
- removably securing said first end of said bar to one of the points in the oral cavity and said second end of said bar to the other said point in the oral cavity;
- making at least one second intraoral scan of the oral cavity including scanning at least a portion of said bar;
- and
- using said second scan to make correction adjustments to the digital image.
5 more elements
Dependencies are inferred from the claim text.