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US 9,069,914 B2Granted
Method and system for fabricating a wax model of a dental coping configured to fit a tooth preparation
AssigneeAlign Technology, Inc.
InventorsAvi Kopelman, Eldad Taub
Life of this patent
Estimating the term…
Abstract
A wax model of a required coping is produced using CNC machining techniques based on a virtual model of the coping created from digital data obtained from the intraoral cavity. The dental coping is then fabricated from the wax model.
Claims21
A computer-implemented method for providing fabrication data useful in the fabrication of a wax model of a dental coping configured to fit a tooth preparation, the method comprising:
- receiving a three-dimensional (3D) virtual model of a patient's intraoral cavity comprising the tooth preparation;
- receiving a user input command to define a finish line on the 3D virtual model of the tooth preparation;
- generating a 3D virtual model of a dental coping based on the finish line and having an inner surface and an external surface offset from the inner surface, the inner surface being configured to fit over at least a portion of the tooth preparation, the external surface of the dental coping being disposed between the inner surface of the dental coping and an external surface of a tooth prosthesis;
- generating a computerized numerical control (CNC) set of wax fabrication instructions based on the 3D virtual model of the dental coping;
- outputting fabrication data comprising the CNC set of wax fabrication instructions for fabricating the wax model of the dental coping by a milling machine;
- and
- fabricating the wax model based on the fabrication data.
4 more elements
A system for fabricating a wax model of a dental coping configured to fit a tooth preparation, the system comprising:
- a computer comprising storage media comprising instructions that, when executed, cause the computer to,
- receive a three-dimensional (3D) virtual model of a patient's intraoral cavity comprising the tooth preparation,
- receive a user input command to define a finish line on the 3D virtual model of the tooth preparation,
- generate a 3D virtual model of a dental coping based on the finish line and having an inner surface and an external surface offset from the inner surface, the inner surface being configured to fit over at least a portion of the tooth preparation, the external surface of the dental coping being disposed between the inner surface of the dental coping and an external surface of a tooth prosthesis,
- generate a computerized numerical control (CNC) set of wax fabrication instructions corresponding to the 3D virtual model of the dental coping, and
- output fabrication data comprising the CNC set of wax fabrication instructions for fabricating a wax model of the dental coping by a milling machine;
- and
- a wax model fabricated based on the fabrication data.
5 more elements
Dependencies are inferred from the claim text.