Method and system for optimizing dental aligner geometry
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-007/02
A61C-007/00
A61B-006/03
A61B-006/14
A61C-007/16
A61C-007/20
출원번호
US-0865091
(2013-04-17)
등록번호
US-9107722
(2015-08-18)
발명자
/ 주소
Matov, Vadim
Morton, John Y.
Kuo, Eric
Cao, Heng
출원인 / 주소
Align Technology, Inc.
대리인 / 주소
Wilson Sonsini Goodrich & Rosati
인용정보
피인용 횟수 :
4인용 특허 :
143
초록▼
Method and system for establishing an initial position of a tooth, determining a target position of the tooth in a treatment plan, calculating a movement vector associated with the tooth movement from the initial position to the target position, determining a plurality of components corresponding to
Method and system for establishing an initial position of a tooth, determining a target position of the tooth in a treatment plan, calculating a movement vector associated with the tooth movement from the initial position to the target position, determining a plurality of components corresponding to the movement vector, and determining a corresponding one or more positions of a respective one or more attachment devices relative to a surface plane of the tooth such that the one or more attachment devices engages with a dental appliance are provided.
대표청구항▼
1. An apparatus for modeling a dental appliance and positioning of one or more attachment devices for moving a tooth, comprising: a data storage unit; anda processing unit coupled to the data storage unit, wherein the processing unit is configured to: determine a first position of a tooth in a treat
1. An apparatus for modeling a dental appliance and positioning of one or more attachment devices for moving a tooth, comprising: a data storage unit; anda processing unit coupled to the data storage unit, wherein the processing unit is configured to: determine a first position of a tooth in a treatment plan;determine a second position for the tooth in the treatment plan;calculate a movement vector associated with a sweep geometric path to move the tooth from the first position to the second position; anddetermine a geometry for a cavity of a polymeric shell of the dental appliance, the cavity accommodating movement of the tooth from the first position to the second position along the movement vector, wherein the polymeric shell comprises at least one polymeric cavity wall of the cavity, the at least one polymeric cavity wall directly contacting one or more attachment devices affixed to the tooth to urge the tooth to move along the movement vector and produce rotational and translational movement of the tooth, and wherein the rotational and translational movement of the tooth is elicited only by the at least one polymeric cavity wall. 2. The apparatus of claim 1, wherein the data storage unit comprises a database, the database comprising at least one of: patient treatment history, orthodontic therapies, orthodontic information, or diagnostics. 3. The apparatus of claim 1, wherein the processing unit is configured to: determine a position of the one or more attachment devices relative to the tooth such that the one or more attachment devices are configured to engage with the dental appliance to generate at least a portion of one or more force components applied to the tooth by the dental appliance to urge the tooth to move along the movement vector. 4. The apparatus of claim 3, wherein the one or more attachment devices are configured to transfer a predetermined force from the dental appliance to the tooth and apply the predetermined force substantially at a surface plane of the tooth. 5. The apparatus of claim 3, wherein the one or more attachment devices comprise a plurality of dental attachment devices provided on the tooth in an abutting position relative to each other, wherein the dental appliance is configured to physically contact each of the plurality of abutting dental attachment devices sequentially and separately for a predetermined period of time. 6. The apparatus of claim 3, wherein the one or more attachment devices provide one or more of: a rotational displacement of the tooth, an angular displacement of the tooth, a linear displacement of the tooth, or one or more combinations thereof. 7. The apparatus of claim 1, wherein: the treatment plan includes an initial arrangement of a patient's teeth, a target arrangement of the patient's teeth, and one or more intermediate arrangements of the patient's teeth; andat least one of the first position of the tooth or the second position of the tooth corresponds to one of the one or more intermediate arrangements of the patient's teeth. 8. The apparatus of claim 1, wherein the processing unit is configured to perform an analysis to predict teeth movement generated by the dental appliance having the cavity geometry when the dental appliance is worn by a patient. 9. The apparatus of claim 1, wherein the processing unit is further configured to: determine an initial geometry for the cavity that is configured to accommodate the union of all positions of the tooth between the first position and the second position without interference between the tooth and the cavity for all positions of the tooth between the first position and the second position;determine one or more force components for application to the tooth to move the tooth along the movement vector from the first position to the second position; anddetermine the geometry for the cavity of the dental appliance by modifying the initial geometry to create the at least one polymeric cavity wall so that that the at least one polymeric cavity wall applies the one or more force components to the tooth. 10. The apparatus of claim 9, wherein the initial cavity geometry defines a three-dimensional volume occupied by the tooth moving from the first position to the second position. 11. The apparatus of claim 9, wherein the processing unit is configured to determine an intermediate position of the tooth between the first position and the second position. 12. The apparatus of claim 11, wherein the initial cavity geometry defines a three-dimensional volume occupied by the tooth moving from the first position to the second position through the intermediate position. 13. The apparatus of claim 1, wherein the at least one polymeric cavity wall comprises at least one recess that engages the one or more attachment devices. 14. The apparatus of claim 1, wherein the one or more attachment devices are configured to engage with the dental appliance to eliminate or reduce tipping torque on the tooth.
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이 특허에 인용된 특허 (143)
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