System and method for manufacturing a dental prosthesis and a dental prosthesis manufactured thereby
AssigneeCadent Ltd.
InventorsAvi Kopelman, Eldad Taub
Life of this patent
Estimating the term…
Abstract
A dental prosthesis is made by externally machining successive layers of wax, each of which is formed on a previous prosthesis layer and/or on a coping. Each wax layer is used to form a mold in situ over the previous prosthesis layer/coping, and the appropriate prosthesis material is cast or otherwise molded to conform to the wax layer by the mold.
Claims21
-26. (canceled)
A method for manufacturing a dental prosthesis, comprising:
- (a) providing at least one coping adapted for implantation at a dental site, the or each said at least one coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of the dental prosthesis having at least one virtual internal surface, the or each said at least one virtual internal surface being substantially complementary to a corresponding said external surface of the or each said coping, respectively;
- (c) generating computerized numerical control (CNC) instructions corresponding to the 3D model;
- (d) producing a set of wax models, comprising at least one wax model, corresponding to the prosthesis in association with said at least one coping by means of material removal operations based on the CNC instructions;
- (e) producing a dental prosthesis on the coping from the set of wax models.
A method for the fabrication of a set of wax models, comprising at least one wax model, to be used for the fabrication of a dental prosthesis of at least one tooth to be fitted over at least one tooth preparation, comprising:
- (a) providing at least one coping adapted for implantation at a dental site, the or each said at least one coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of the dental prosthesis having at least one virtual internal surface, the or each said at least one virtual internal surface being substantially complementary to a corresponding said external surface of the or each said coping, respectively;
- (c) generating computerized numerical control (CNC) instructions corresponding to the 3D model;
- (d) producing a set of wax models, comprising at least one wax model, corresponding to the prosthesis in association with said at least one coping by means of material removal operations based on the CNC instructions.
A system for manufacturing a dental prosthesis, comprising:
- (a) first fabrication system for providing at least one coping adapted for implantation at a dental site, the or each said at least one coping having a corresponding external surface;
- (b) first computer based system for providing a three-dimensional (3D) virtual model of the dental prosthesis having at least one virtual internal surface, the or each said at least one virtual internal surface being substantially complementary to a corresponding said external surface of the or each said coping, respectively;
- (c) second computer based system for generating computerized numerical control (CNC) instructions corresponding to the 3D model;
- (d) second fabrication system for producing a set of wax models, comprising at least one wax model, corresponding to the prosthesis in association with said at least one coping by means of material removal operations based on the CNC instructions;
- (e) third fabrication system for producing a dental prosthesis on the coping from the set of wax models.
Dependencies are inferred from the claim text.