System and method for positioning three-dimensional brackets on teeth
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-003/00
A61C-007/00
G06T-019/20
G06T-017/20
A61C-007/14
출원번호
US-0842246
(2017-12-14)
등록번호
US-10022204
(2018-07-17)
발명자
/ 주소
Cheang, Ka Man
출원인 / 주소
Align Technology, Inc.
대리인 / 주소
Wilson Sonsini Goodrich & Rosati
인용정보
피인용 횟수 :
0인용 특허 :
156
초록▼
System and methods for positioning 3D virtual brackets on teeth for the precise positioning of conventional brackets and wire. Various reference features may be calculated for the teeth and used to calculate a position for the virtual bracket. Reference features that are calculated include curve of
System and methods for positioning 3D virtual brackets on teeth for the precise positioning of conventional brackets and wire. Various reference features may be calculated for the teeth and used to calculate a position for the virtual bracket. Reference features that are calculated include curve of Spee, Andrew's plane, and a facial axis of the clinical crown for the teeth.
대표청구항▼
1. A method for positioning virtual brackets on a virtual representation of a patient's teeth, the method comprising: receiving an electronic representation of the patient's teeth; outputting the virtual representation of the patient's teeth to a display; determining facial axis points of the patien
1. A method for positioning virtual brackets on a virtual representation of a patient's teeth, the method comprising: receiving an electronic representation of the patient's teeth; outputting the virtual representation of the patient's teeth to a display; determining facial axis points of the patient's teeth from the received electronic representation of the patient's teeth;determining a reference plane relative to the received electronic representation of the patient's teeth for aligning virtual brackets on the virtual representation of the patient's teeth;outputting, with the display, the reference plane relative to the virtual representation of the patient's teeth;outputting, with the display, control points relative to the reference plane, wherein the control points are manipulable by a user for modifying the anatomic reference plane;locating suitable sites for placement of virtual brackets on the virtual representation of the patient's teeth based on at least the determined facial axis points of the patient's teeth;outputting, with the display, the virtual brackets on the virtual representation of the patient's teeth in an initial position, the virtual brackets aligned on the virtual representation of the patient's teeth according to the reference plane; andmanufacturing a dental template for positioning brackets on the patient's teeth by outputting instructions for manufacturing the dental template, the dental template to facilitate positioning of real brackets on the patient's teeth according to the placement of virtual brackets on the virtual representation of the patient's teeth. 2. The method of claim 1, further comprising, receiving user input via at least one of the control points to manipulate the control point. 3. The method of claim 2, further comprising: modifying the reference plane relative to the virtual representation of the patient's teeth to form a modified reference plan; andafter modifying the reference plane, outputting, with the display, the reference plane relative to the virtual representation of the patient's teeth. 4. The method of claim 1, further comprising, prior to outputting the virtual brackets on the virtual representation of the patient's teeth, receiving a user selection of a virtual bracket type from a library of virtual brackets; and wherein virtual bracket base contours of the user selected virtual bracket type are defined. 5. The method of claim 4, wherein outputting the virtual brackets on the virtual representation of the patient's teeth comprises aligning virtual brackets with respective sites and calculating a final bracket fitting for each virtual bracket based at least on the virtual bracket base contour of the respective virtual bracket, wherein the final bracket fitting for each virtual bracket avoids collision of each virtual bracket and respective patient's teeth. 6. The method of claim 1, further comprising calculating angulation and inclination statistics of the positioned virtual brackets using the reference plane. 7. The method of claim 1, wherein the reference plane is created from an ideally treated case associated with the electronic representation of the patient's teeth. 8. The method of claim 1, further comprising: displaying a wire extending through the virtual brackets;receiving user input comprising at least one of a user modification of a position of a virtual tooth of the displayed virtual representation of the patient's teeth or a user modification of a position of an outputted virtual bracket; andupdating the display of the displayed wire in response to the user input. 9. The method of claim 1, wherein determining the reference plane comprises receiving a user selection of the reference plane. 10. The method of claim 1, wherein the reference plane comprises Andrew's plane or the curve of Spee. 11. The method of claim 1, further comprising finalizing positions of the virtual brackets on the virtual representation of the patient's teeth and outputting instructions for fabricating a dental template to facilitate positioning of real brackets on the patient's teeth. 12. The method of claim 1, further comprising modifying the initial position of the virtual bracket on the patient's tooth in response to input from a user. 13. The method of claim 12, wherein modifying the initial position of the virtual bracket comprises one or more of: restricting the virtual bracket to move on a surface of the patient's tooth or restricting the virtual bracket to move along the reference feature. 14. The method of claim 12, further comprising testing for a collision of the virtual bracket with a tooth. 15. The method of claim 1, wherein the digital data set represents the patient's teeth in a target arrangement. 16. A method comprising: receiving an electronic representation of the patient's teeth;outputting the virtual representation of the patient's teeth to a display;determining an anatomic reference plane relative to the received electronic representation of the patient's teeth for aligning virtual brackets on the virtual representation of the patient's teeth, the anatomic reference plane being defined in part by points on the patient's teeth;displaying the anatomic reference plane to the display;displaying control points for modifying the anatomic reference plane;outputting, with the display, the virtual brackets on the virtual representation of the patient's teeth, the outputted virtual brackets aligned on the virtual representation of the patient's teeth according to the anatomic reference plane;finalizing positions of the virtual brackets on the virtual representation of the patient's teeth; andmanufacturing a dental template for positioning brackets on the patient's teeth by outputting instructions for fabricating the dental template to facilitate positioning of real brackets on the patient's teeth according to the finalized positions of the virtual brackets on the virtual representation of the patient's teeth. 17. The method of claim 16, further comprising receiving a user input to at least one of the control points for modifying a shape of the anatomic reference plane, wherein the user input is received through user manipulation of one or more displayed control points. 18. The method of claim 16, wherein: the virtual representation of the patient's teeth includes a virtual representation of the patient's gingival tissue; andthe finalized positions of the virtual brackets on the virtual representation of the patient's teeth accounts for collisions between the virtual brackets and the virtual representation of the patient's teeth and gingival tissue. 19. A system for positioning a virtual bracket on a virtual representation of a patient's tooth, the system comprising:a processor; andmemory comprising program code that, when executed by the processor, causes the system to:receive an electronic representation of the patient's tooth;output the virtual representation of the patient's tooth to a display;determine a reference point of the patient's tooth from the received electronic representation of the patient's tooth;determine a reference plane relative to the received electronic representation of the patient's tooth for aligning the virtual bracket on the virtual representation of the patient's tooth;output the reference plane on the display;output control points for the reference plane on the display;receive a user input for modifying the reference plane via the control points;modify a shape of the reference plane based on the user input via the control points;locate a suitable site for placement of the virtual bracket on the virtual representation of the patient's tooth based on at least the determined reference point of the patient's tooth;output, with the display, the virtual bracket on the virtual representation of the patient's tooth, the outputted virtual bracket aligned on the virtual representation of the patient's tooth based on at least the modified reference plane;finalize a position of the virtual bracket on the virtual representation of the patient's tooth; andmanufacture a dental template for positioning brackets on the patient's teeth by outputting instructions for fabricating the dental template to facilitate positioning of a real bracket on the patient's tooth according to the finalized position of the virtual bracket on the virtual representation of the patient's tooth. 20. The system of claim 19, wherein the reference point comprises a facial axis point of the patient's tooth.
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