# US 2019/0172200 A1 · Integration of intra-oral imagery and volumetric imagery

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- Number: US 2019/0172200 A1
- Document ID: US20190172200A1
- Status: Published application
- Kind: A1
- Application number: 16/270,151
- Filed: 2019-02-07
- Published: 2019-06-06
- Earliest claimed: 2012-12-14
- Assignees: Ormco Corporation
- Applicants: Ormco Corporation
- Inventors: Craig A. Andreiko; Robert F. Dillon; Bradley S. Carlson
- Web page: https://patentgrep.com/patent/US20190172200A1

## CPC

- G06T 7/0012: {Biomedical image inspection}
- A61B 5/0088: {for oral or dental tissue}
- A61B 5/4547: {Evaluating teeth}
- A61B 5/7425: {Displaying combinations of multiple images regardless of image source, e.g. displaying a reference anatomical image with a live image}
- A61B 6/032: {Transmission computed tomography [CT]}
- A61B 6/51: for dentistry
- A61B 6/5247: {combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound}
- G06T 3/14: Transformations for image registration, e.g. adjusting or mapping for alignment of images
- G06T 7/11: Region-based segmentation
- G06T 7/187: involving region growing; involving region merging; involving connected component labelling
- G06T 17/10: Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
- G06V 20/64: Three-dimensional [3D] objects
- G16Z 99/00: Subject matter not provided for in other main groups of this subclass
- A61B 5/1077: {Measuring of profiles}
- A61B 5/4504: {Bones (A61B5/4547 takes precedence)}
- A61B 5/6814: {Head}
- A61B 5/682: {Mouth, e.g., oral cavity; tongue; Lips; Teeth}
- A61B 5/7445: {Display arrangements, e.g. multiple display units}
- A61B 6/4085: {Cone-beams}
- A61B 2090/365: {augmented reality, i.e. correlating a live optical image with another image}
- A61B 2090/3762: {using computed tomography systems [CT]}
- G06T 2200/04: involving 3D image data
- G06T 2207/30036: Dental; Teeth
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G16Z: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR

## Abstract

Systems and methods for integrating intra-oral imagery and volumetric imagery. In one example, a dental imaging system includes a processor and a memory. The memory stores instructions that, when executed by the processor, cause the dental imaging system to receive shape data of a super-gingival portion of a patient's teeth; receive volumetric imagery of the super-gingival portion of the patient's teeth and volumetric imagery of a sub-gingival portion of the patient's teeth; segment the shape data to determine crowns of the patient's teeth; and register the crowns with the volumetric imagery of the super-gingival portion.

## Claims

### Claim 1

A method of integrating intra-oral imagery and volumetric imagery, the method comprising:
receiving, via a computer, shape data of a super-gingival portion of a patient's teeth;
receiving, via the computer, volumetric imagery of the super-gingival portion of the patient's teeth and volumetric imagery of a sub-gingival portion of the patient's teeth;
segmenting, via the computer, the shape data to determine crowns of the patient's teeth; and
registering, via the computer, the crowns with the volumetric imagery of the super-gingival portion.

### Claim 2 (depends on 1)

The method as claimed in claim 1, further comprising integrating the crowns with a voxel representation of the volumetric imagery to demarcate a boundary between roots and crowns in the volumetric imagery.

### Claim 3 (depends on 1)

The method as claimed in claim 1, further comprising mapping coordinates of crown boundaries to voxels of the volumetric imagery to determine a boundary between roots and crowns in the volumetric imagery.

### Claim 4 (depends on 1)

The method of claim 1, wherein registering, via the computer, the crowns with the volumetric imagery of the super-gingival portion includes registering the crowns to voxels of the volumetric imagery.

### Claim 5 (depends on 1)

The method as claimed in claim 1, wherein the segmenting, via the computer, the shape data to determine crowns of the patient's teeth includes representing the crowns as a surface mesh of node points.

### Claim 6 (depends on 1)

The method as claimed in claim 1, wherein the crowns are represented as limited length vectors.

### Claim 7 (depends on 6)

The method as claimed in claim 6, wherein the limited length vectors are converted to vowel representations via three dimensional coordinate transformations.

### Claim 8 (depends on 1)

The method as claimed in claim 1, wherein segmenting, via the computer, the shape data to determine crowns of the patient's teeth includes processing a point cloud via an integrating application.

### Claim 9

A dental imaging system for integrating intra-oral imagery and volumetric imagery, the dental imaging system including a processor and a memory, the memory storing instructions that, when executed by the processor, cause the dental imaging system to:
receive shape data of a super-gingival portion of a patient's teeth;
receive volumetric imagery of the super-gingival portion of the patient's teeth and volumetric imagery of a sub-gingival portion of the patient's teeth;
segment the shape data to determine crowns of the patient's teeth; and
register the crowns with the volumetric imagery of the super-gingival portion.

### Claim 10 (depends on 9)

The dental imaging system as claimed in claim 9, further comprising integrating the crowns with a voxel representation of the volumetric imagery to demarcate a boundary between roots and crowns in the volumetric imagery.

### Claim 11 (depends on 9)

The dental imaging system as claimed in claim 9, further comprising mapping coordinates of crown boundaries to voxels of the volumetric imagery to determine a boundary between roots and crowns in the volumetric imagery.

### Claim 12 (depends on 9)

The dental imaging system as claimed in claim 9, wherein the crowns are represented as limited length vectors.

### Claim 13 (depends on 12)

The dental imaging system as claimed in claim 12, wherein the limited length vectors are converted to vowel representations via three dimensional coordinate transformations.

### Claim 14 (depends on 9)

The dental imaging system as claimed in claim 9, wherein the instructions, when executed by the processor, cause the dental imaging system to segment the shape data to determine crowns of the patient's teeth by processing a point cloud via an integrating application.