PRODUCTION OF A DENTAL PROSTHESIS

• US 20180200034A1
• Filed: 03/07/2016
• Published: 07/19/2018
• Est. Priority Date: 03/09/2015
• Status: Active Grant

• Current Assignee: Lyra Holding
• Original Assignee: Lyra Holding
• Inventors: Deville, Charles Louis Marie, Lancieux, Cedric, Allene, Cedric Gilbert
• Granted Patent: US 10,945,820 B2
• Time in Patent Office: Days
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 13/0006 Production methods
• CPC Class Codes: A61C 13/0018 using laser
• CPC Class Codes: A61C 13/0019 using three dimensional printing
• CPC Class Codes: A61C 13/0022 Blanks or green, unfinished dental restoration parts
• CPC Class Codes: A61C 13/083 Porcelain or ceramic teeth A61C13/081 takes precedence; preparations A61K6/80
• CPC Class Codes: A61C 5/77 Methods or devices for making crowns
• CPC Class Codes: A61C 8/0048 Connecting the upper structure to the implant, e.g. bridging bars A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0051 Abutment monobloc with restoration
• CPC Class Codes: A61C 8/0066 with positioning means A61C8/006 takes precedence
• CPC Class Codes: A61C 9/004 Means or methods for taking digitized impressions

Abstract

Method for manufacturing a dental prosthesis on implant, characterized in that it comprises a step of manufacturing of the outer wall (E5) of the dental prosthesis and a step of manufacturing of at least one connection (E6) intended for fixing on to at least one implant.

Claims

1. A method for manufacturing a dental prosthesis on implant, comprising:

manufacturing an outer wall of a dental prosthesis, and

manufacturing at least one connection intended for fixing onto at least one implant of the dental prosthesis in one and the same operation on one and the same manufacturing device,

wherein the manufacturing of the dental prosthesis and the manufacturing of the at least one connection comprise performing at least one action selected from (i) machining using one and the same machining tool or several machining tools, (ii) laser cutting, and (iii) additive manufacturing steps.

2. The method according to claim 1, wherein the manufacturing of the at least one connection with the at least one implant of the dental prosthesis comprises manufacturing a connection suitable for a direct connection onto an implant, or for a connection with one or more intermediate piece or pieces intended for fixing onto an implant.

3. The method according to claim 1, wherein the manufacturing of the outer wall of the dental prosthesis and the manufacturing of the at least one connection intended for fixing onto an implant of the dental prosthesis comprise material removal.

4. The method according to claim 1, comprising the following preliminary actions:

determining a form of an outer wall of the dental prosthesis to be manufactured, by a computer;

determining a total connection with an implant of the dental prosthesis to be manufactured, by a computer.

5. The method according to claim 4, wherein the determining of the connection with an implant comprises the following actions:

performing an intra-buccal digitization in an area concerned and/or performing input through a human-machine interface of data determining a type of implant, and transmitting the digitization or input data to a computer;

selecting, by a computer, of a geometry of the connection suited to the at least one implant concerned from a library stored in an electronic memory.

7. The method according to claim 1, comprising manufacturing several connections by material removal to manufacture a plurality of dental prosthesis intended for fixing onto several implants from a single block.

18. The method according to claim 3, wherein the material removal is by at least one of machining and laser cutting, from a solid block of material.

19. The method according to claim 18, wherein the material of the solid block is selected from the group consisting of lithium disilicate, feldspathic ceramic, nano-composites, zircon, temporary materials, and metals.

20. The method according to claim 19, wherein the material of the solid block is selected from temporary materials, wherein the temporary materials are PMMA and PEEK.

6. The method according to claim 6, comprising the following additional actions:

reading, in an electronic memory, of data on manufacturing strategies;

transmitting manufacturing commands to a manufacturing device.

8. A device for manufacturing a dental prosthesis on implant, comprising:

a tool-holder for a tool, and

a computer,

wherein the computer transmits drive instructions to the tool-holder of the tool to manufacture a form of an outer wall of a dental prosthesis and to manufacture at least one connection intended for fixing onto at least one implant, wherein the computer is configured to implement a method for manufacturing a dental prosthesis on implant, comprising;

manufacturing an outer wall of a dental prosthesis, and

manufacturing at least one connection intended for fixing onto at least one implant of the dental prosthesis in one and the same operation on one and the same manufacturing device,

wherein the manufacturing of the dental prosthesis and the manufacturing of the at least one connection comprise performing at least one action selected from (i) machining using one and the same machining tool or several machining tools, (ii) laser cutting, and (iii) adding material.

9. Device for manufacturing a dental prosthesis according to claim 8, comprising a computer medium comprising a stored computer program comprising computer program code configured for implementing a method for manufacturing a dental prosthesis on implant so that, when the programme code is executed on a computer,

the computer implements a method for determining a form of an outer wall of a dental prosthesis to be manufactured and for determining at least one connection intended for fixing onto at least one implant,

wherein the computer implements the determining actions, or the computer is linked by a communication device to an external computer implementing at least one of the determining actions and transmitting to the computer digital data resulting from the at least one of the determining actions by the external computer.

10. The device according to claim 8, comprising a machining tool which is an at least partly conical machining milling cutter, of a length greater than or equal to 17 mm, and comprising an end inscribed in a cylinder with a diameter less than or equal to 1.05 mm.

11. The device according to claim 8, comprising an electronic memory linked to the computer, wherein a library of connections with implant for a dental prosthesis on implant is stored in the electronic memory.

12. The device according to claim 8, comprising a human-machine interface allowing an operator to input an implant model used.

13. A dental reconstruction system, comprising:

an intra-buccal digitization device,

a device for manufacturing a dental prosthesis according to claim 8, and

a communication device between the intra-buccal digitization device and the dental manufacturing device.

14. Computer-readable computer medium, comprising a stored computer program comprising computer program code for implementing a method for manufacturing a dental prosthesis on implant, comprising:

determining, automatically or by input via a human-machine interface, data representing one or more references of one or more implants involved in a dental reconstruction, and transmitting the data to a computer;

selecting, by the computer, of a geometry of at least one dental prosthesis connection suited to at least one implant of a dental reconstruction zone concerned from a library stored in an electronic memory;

transmitting manufacturing commands for at least one connection of the dental prosthesis to a manufacturing device, to manufacture the at least one connection selected by the preceding selecting in one and the same operation on one and the same manufacturing device.

16. A device for manufacturing a dental prosthesis on implant, comprising:

a tool-holder for a tool, and

a computer, and

the computer-readable computer medium according to claim 14,

wherein the computer transmits drive instructions to the tool-holder to manufacture at least one connection intended for fixing onto at least one implant.

17. The device according to claim 16, wherein the computer-readable computer medium is configured to implement, if appropriate, reading, in an electronic memory, data on manufacturing strategies;

15. A method for manufacturing a dental prosthesis on implant, comprising:

determining, automatically or by input via a human-machine interface, data representing one or more references of one or more implants involved in a dental reconstruction, and transmitting the data to a computer;

selecting, by the computer, of a geometry of at least one connection of a dental prosthesis suited to at least one implant of a dental reconstruction zone concerned from a library stored in an electronic memory;

if appropriate, reading, in an electronic memory, data on manufacturing strategies;

transmitting manufacturing commands for at least one connection of the dental prosthesis to a manufacturing device, to manufacture the at least one connection selected by the preceding selecting.