Method and system for optimizing dental aligner geometry
First Claim
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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; and
a 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; and
determine 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.
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Abstract
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.
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14 Claims
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1. An apparatus for modeling a dental appliance and positioning of one or more attachment devices for moving a tooth, comprising:
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a data storage unit; and a 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; and determine 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification