Method and system for manufacturing a dental prosthesis
AssigneeCadent Ltd.
InventorsAvi Kopelman, Eldad Taub
Life of this patent
Estimating the term…
Abstract
A method and system are provided for manufacturing a dental prosthesis, in which the machining operations therefor may be optimized. Dimensional data of at least one critical parameter of the workpiece from which the crown is to be manufactured is determined and compared with corresponding target dimensional data of the desired prosthesis. The workpiece is then subjected to a material removal operation by a machining tool along machining paths that are determined on the basis of this comparison.
Claims20
A method for manufacturing a dental prosthesis having a layer of material, said prosthesis for mounting in an intraoral cavity, the method comprising:
- (i) digitally mapping at least an area of the intraoral cavity in which the prosthesis is to be mounted;
- (ii) creating an idealized three-dimensional surface profile for said layer based on a digital map provided in (i);
- (iii) providing said layer of material on a workpiece, said layer of a material comprising an outer surface;
- (iv) for said layer of material:
- performing a mapping operation to determine a three-dimensional shape of said outer surface of the corresponding layer of material;
- subjecting said layer of material to a material removing operation comprising machining paths to form the corresponding prosthesis layer;
- wherein the machining paths are computer-controlled on the basis of local differences between said three dimensional shape and said idealized three-dimensional surface profile for the corresponding said layer, and optimized to reduce machining times.
A manufacturing system for manufacturing a dental prosthesis from a layer of material, the system comprising:
- (a) first scanner adapted to digitally map at least an area of an intraoral cavity in which the prosthesis is to be mounted;
- (b) first microprocessor system adapted to create an idealized three-dimensional surface profile for said layer based on a digital map provided by said first scanner;
- (c) material adding system adapted to apply said layer of material on a workpiece, said layer of a material comprising an outer surface;
- (d) second scanner adapted to perform a mapping operation to determine a three-dimensional shape of said outer surface of said layer of material;
- (e) machining system adapted to subject said layer of material to a material removing operation comprising machining paths to form a corresponding prosthesis layer, said machining paths being computer controllable;
- (f) second microprocessor system adapted to control said machining paths on the basis of local differences between said three-dimensional shape and said idealized three-dimensional surface profile for the corresponding layer, and optimized to reduce machining times.
Dependencies are inferred from the claim text.