Automatic ectopic teeth detection on scan
AssigneeAlign Technology, Inc.
InventorsRoman A. ROSCHIN, Evgenii Vladimirovich KARNYGIN, Sergey GREBENKIN, Alexey LAZAREV, Dmitry GUSKOV, Ivan SLEPYNIN, Alexey VLADYKIN, Alexander VOVCHENKO, Alexander BELIAEV
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Abstract
Provided herein are orthodontic devices and methods for patients with missing or ectopic teeth. Methods and processes are provided to properly number the teeth of a patient's arch after a dental scan. Methods and processes are also provided to automatically detect missing or ectopic teeth after a dental scan. Methods of designing and manufacturing the aligner are also provided.
Claims20
A method for numbering a patient's teeth to account for an abnormal tooth, comprising:
- receiving, in a processor, a dental scan along a teeth curve of a patient's dental arch;
- numbering, in the processor, each of the patient's teeth to a first numbering value,
- wherein the first numbering value corresponds to an expected tooth type;
- detecting dimensions of each of the patient's teeth;
- evaluating, in the processor, a width of a target tooth or widths of adjacent target teeth to determine a tooth type or teeth types;
- and
- re-numbering the patient's teeth when the first numbering value of the target tooth or adjacent target teeth does not match the determined tooth type or teeth types.
A computer-implemented method, comprising:
- gathering a virtual representation of a patient's dental arch;
- gathering a model segmentation of the virtual representation of the patient's dental arch, the model segmentation providing a basis to assign anatomical identifiers corresponding to each tooth in the virtual representation of the patient's dental arch;
- numbering each of the patient's teeth to a first numbering value, wherein the first numbering value corresponds to an expected tooth type;
- detecting dimensions of each of the patient's teeth;
- evaluating a width of a target tooth or widths of adjacent target teeth to determine a tooth type or teeth types;
- re-numbering the patient's teeth when the first numbering value of the target tooth or adjacent target teeth does not match the determined tooth type or teeth types;
- and
- creating a segmentation of the virtual representation of the patient's dental arch by modifying the model segmentation of the virtual representation of the patient's dental arch with an anatomical identifier corresponding to an abnormal tooth.
A system comprising:
- one or more processors;
- memory coupled to the one or more processors, the memory configured to store computer-program instructions that, when executed by the processor, cause the processor to execute a computer-implemented method, the computer-implemented method comprising:
- receiving, in a processor, a dental scan along a teeth curve of a patient's dental arch;
- numbering each of the patient's teeth to a first numbering value, wherein the first numbering value corresponds to an expected tooth type;
- detecting dimensions of each of the patient's teeth;
- evaluating, in the processor, a width of a target tooth or widths of adjacent target teeth to determine a tooth type or teeth types;
- and
- re-numbering the patient's teeth when the first numbering value of the target tooth or adjacent target teeth does not match the determined tooth type or teeth types.
Dependencies are inferred from the claim text.