Method of using computer data to modify or alter an existing cast or model
First Claim
Patent Images
1. A method for creating a master cast comprising the steps of:
- a) taking an impression of a patient'"'"'s anatomic structure, b) forming an anatomic cast from said impression, c) creating a reference appliance on said anatomic cast, d) positioning said reference appliance to said patient'"'"'s anatomic structure, e) obtaining a CT scan of said reference appliance simultaneously with said patient'"'"'s anatomic structure to produce CT scan data, f) formatting said CT scan data to create formatted CT scan data, g) using said formatted CT scan data to create an implant positioning plan, said implant positioning plan comprising three-dimensional coordinate data, and h) using said implant positioning plan to modify said anatomic cast.
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Abstract
A master cast or model for use in fabricating a dental prosthesis is created by modifying or altering a pre-existing cast or model using computer data derived from a CT scan. The use of such computer data eliminates the need to take an impression of a patient'"'"'s oral anatomy following modification of such oral anatomy in preparation for the dental prosthesis.
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Citations
30 Claims
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1. A method for creating a master cast comprising the steps of:
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a) taking an impression of a patient'"'"'s anatomic structure, b) forming an anatomic cast from said impression, c) creating a reference appliance on said anatomic cast, d) positioning said reference appliance to said patient'"'"'s anatomic structure, e) obtaining a CT scan of said reference appliance simultaneously with said patient'"'"'s anatomic structure to produce CT scan data, f) formatting said CT scan data to create formatted CT scan data, g) using said formatted CT scan data to create an implant positioning plan, said implant positioning plan comprising three-dimensional coordinate data, and h) using said implant positioning plan to modify said anatomic cast. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 29)
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24. A method for creating a master cast comprising the steps of:
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a) taking a three-dimensional impression of a patient'"'"'s anatomic structure, b) forming a three-dimensional anatomic cast from said impression, c) creating a reference appliance on said anatomic cast, d) positioning said reference appliance to said patient'"'"'s anatomic structure, e) obtaining a CT scan of said reference appliance simultaneously with said patient'"'"'s anatomic structure to produce CT scan data, f) formatting said CT scan data to create formatted CT scan data, g) creating a three-dimensional implant positioning plan using said formatted CT scan data, said implant positioning plan comprising three-dimensional coordinate data, h) creating one or more bores in said anatomic cast in accordance with said implant positioning plan, and i) installing one or more implants in said one or more bores.
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28. A method for creating a master cast comprising the steps of:
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a) taking a three-dimensional impression of a patient'"'"'s anatomic structure, b) forming a three-dimensional anatomic cast from said impression, c) creating a reference appliance on said anatomic cast, said reference appliance having one or more fiducial markers, d) positioning said reference appliance to said patient'"'"'s anatomic structure, e) obtaining a CT scan of said reference appliance simultaneously with said patient'"'"'s anatomic structure to produce CT scan data, f) formatting said CT scan data to create formatted CT scan data, g) creating a three-dimensional implant positioning plan using said formatted CT scan data, said implant positioning plan comprising three-dimensional coordinate data, h) positioning said reference appliance on said anatomic cast, i) positioning said anatomic cast on a milling table and fixing said position of said anatomic cast using said one or more fiducial markers, j) removing said reference appliance from said anatomic cast, k) using said implant positioning plan to CNC mill one or more bores in said anatomic cast, and l) installing one or more implants in said one or more bores.
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30. A method of installing dental implants in one or more desired implant locations on a patient comprising the steps of:
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a) taking an impression of a patient'"'"'s anatomic structure, b) forming an anatomic cast from said impression, c) creating a reference appliance on said anatomic cast, d) positioning said reference appliance to said patient'"'"'s anatomic structure, e) obtaining a CT scan of said reference appliance simultaneously with said patient'"'"'s anatomic structure to produce CT scan data, f) formatting said CT scan data to create formatted CT scan data, g) using said formatted CT scan data to create an implant positioning plan, said implant positioning plan comprising three-dimensional coordinate data, h) using said implant positioning plan to install one or more implant replicas into said anatomic cast at locations that replicate said one or more desired implant locations and to confirm the anticipated positioning of said one or more dental implants in said patient, i) using said reference appliance to drill one or more bores into said patient'"'"'s anatomic structure at said one or more desired implant locations, and j) installing dental implants into said one or more bores.
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Specification