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US 7,689,310 B2Granted
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.
Claims26
A method for manufacturing a dental prosthesis, comprising:
- (a) providing at least one coping configured for implantation at a dental site, each of said at least one coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual internal surface, each of said at least one virtual internal surface being complementary to a corresponding said external surface of each of said coping, respectively;
- (c) generating computerized numerical control (CNC) instructions corresponding to said 3D virtual model;
- (d) producing a wax model, comprising at least one wax model layer, corresponding to said prosthesis, in situ with the respective each of said coping by means of material removal operations based on said CNC instructions, each of said wax model layer having uniform or non-uniform thickness whereby the or each wax model layer has uniform or non-uniform strength, thereby enabling the strength of the corresponding prosthesis to be maximized based on external factors selected from the group comprising force, dimensions, tolerance, fit, and material used;
- and
- (e) producing a dental prosthesis in situ on said coping from said wax model.
3 more elements
A method for the fabrication of a wax model, comprising at least one wax model layer, 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 configured for implantation at a dental site, each of said at least one coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual internal surface, each of said at least one virtual internal surface being complementary to a corresponding said external surface of each of said coping, respectively;
- (c) generating computerized numerical control (CNC) instructions corresponding to said 3D virtual model;
- and
- (d) producing a wax model, comprising at least one wax model layer, corresponding to said prosthesis, in situ on the respective each of said coping by means of material removal operations based on said CNC instructions, each of said wax model layer having uniform or non-uniform thickness whereby the or each wax model layer has uniform or non-uniform strength, thereby enabling the strength of the corresponding prosthesis to be maximized based on external factors selected from the group comprising force, dimensions, tolerance, fit, and material used.
2 more elements
A system for manufacturing a dental prosthesis, comprising:
- (a) first fabrication system for providing at least one coping configured for implantation at a dental site, each of said at least one coping having a corresponding external surface;
- (b) first computer based system for providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual internal surface, each of said at least one virtual internal surface being complementary to a corresponding said external surface of each of said coping, respectively;
- (c) second computer based system for generating computerized numerical control (CNC) instructions corresponding to said 3D virtual model;
- (d) second fabrication system for producing a wax model, comprising at least one wax model layer, corresponding to said prosthesis in situ on the respective each of said coping by means of material removal operations based on said CNC instructions, each of said wax model layer having uniform or non-uniform thickness whereby the or each wax model layer has uniform or non-uniform strength, thereby enabling the strength of the corresponding prosthesis to be maximized based on external factors selected from the group comprising force, dimensions, tolerance, fit, and material used;
- and
- (e) third fabrication system for producing a dental prosthesis on said coping from said wax model.
3 more elements
A system for the fabrication of a wax model, comprising at least one wax model layer, 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) first fabrication system for providing at least one coping configured for implantation at a dental site, each of said at least one coping having a corresponding external surface;
- (b) first computer based system for providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual internal surface, each of said at least one virtual internal surface being complementary to a corresponding said external surface of each of said coping, respectively;
- (c) second computer based system for generating computerized numerical control (CNC) instructions corresponding to said 3D virtual model;
- and
- (d) second fabrication system for producing a wax model, comprising at least one wax model layer, corresponding to said prosthesis in situ on the respective each of said coping by means of material removal operations based on said CNC instructions, each of said wax model layer having uniform or non-uniform thickness whereby the or each wax model layer has uniform or non-uniform strength, thereby enabling the strength of the corresponding prosthesis to be maximized based on external factors selected from the group comprising force, dimensions, tolerance, fit, and material used.
2 more elements
A method for manufacturing a dental prosthesis, comprising:
- (a) providing at least one coping configured for implantation at a dental site, each of said coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual layer, and a virtual internal surface complementary to a respective said external surface of each of said coping;
- (c) generating computerized numerical control (CNC) instructions corresponding to the or each said virtual layer of said 3D virtual model;
- (d) producing a wax model, comprising at least one wax model layer, corresponding to the or each said virtual layer in situ on the respective each of said coping by means of material removal operations based on said CNC instructions, each of said wax model layer having uniform or non-uniform thickness whereby each of said wax model layer has uniform or non-uniform strength, thereby enabling the strength of the corresponding prosthesis to be maximized based on external factors selected from the group comprising force, dimensions, tolerance, fit, and material used;
- and
- (e) producing a dental prosthesis in situ on said coping from said wax model.
3 more elements
A method for manufacturing a dental prosthesis, comprising:
- (a) providing at least one coping configured for implantation at a dental site, each of said at least one coping having a corresponding external surface;
- (b) providing a three-dimensional (3D) virtual model of said dental prosthesis having at least one virtual internal surface, each of said at least one virtual internal surface being complementary to a corresponding said external surface of each of said coping, respectively;
- (c) generating computerized numerical control (CNC) instructions corresponding to said 3D virtual model;
- (d) producing a wax model, comprising at least one wax model layer, corresponding to said prosthesis, in situ with the respective each of said coping by means of material removal operations based on said CNC instructions;
- and
- (e) producing a dental prosthesis in situ on said coping from said wax model.
3 more elements
Dependencies are inferred from the claim text.