DIGITAL CORRECTION FACTORS AND MOUNTING WITH DIGITAL CORRECTION FACTORS OF REAL PREFABRICATED PROSTHETIC TEETH

Abstract

The invention relates to correction factors, in particular digital correction factors or printed correction factors, as translation (x,y,z) data and/or as data of the rotation of at least one real prefabricated prosthetic tooth up to a plurality of real prefabricated prosthetic teeth in a mounting for material-ablating processing of the prosthetic teeth, the correction factors preferably being assigned to the mounting as bar code or as quick-response code for use in a digitally controlled material-ablating process, the mounting having at least one fixed real prefabricated tooth. The invention also relates to the mounting with assigned digital correction factors as well as to a method for determining the digital correction factors of the at least one real prefabricated prosthetic tooth.

Claims

1. A mounting (1) for use in a digitally controlled material-ablating process, containing at least one fixed real prefabricated prosthetic tooth (3), wherein the mounting (1) has a plane (1.1) in which at least one flat three-dimensional moulded body (4a) is arranged, or the mounting (1) has a plane (1.1) in which at least two clamping elements (4b) are arranged, at least one real prefabricated prosthetic tooth (3) being fixed in the moulded body (4a) or between the clamping elements (4b), the tooth axis (3.1) of the at least one prefabricated prosthetic tooth being arranged at an angle of 20 to 160 to the plane (1.1) of the mounting (1), so that the at least one real prefabricated prosthetic tooth (3) is processible from coronal (3.2) and/or from apical (3.3) in an ablating process, and correction factors (2) being assigned to the mounting (1) for spatial, real arrangement (6) of the at least one prefabricated prosthetic tooth (3) in relation to a reference arrangement (A) comprising at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) of the mounting (1) or at least one virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1) of the mounting (1).

2. The mounting (1) according to claim 1, wherein the correction factors (2) (i) are stored as digital correction factors in the form of a bar code or quick-response code or (ii) are graphically reproduced as scannable correction factors, in particular are assigned to the mounting (1) or are arranged on the mounting as bar code or as quick-response code (QR code).

3. The mounting (1) according to claim 1, wherein the correction factors (2) contain digital data having information on deviation in the spatial actual arrangement in the form of translation (x,y,z) data and/or rotation of the at least one real prefabricated prosthetic tooth (3) in relation to a reference arrangement (A), of at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) and/or of a virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1).

4. The mounting (1) according to claim 1, wherein at least two real prefabricated prosthetic teeth (3) are fixed in the moulded body (4a) or between the clamping elements (4b), the respective tooth axis (3.1) of the prosthetic teeth being arranged at an angle of 20 to 160 to the plane (1.1) of the mounting (1), and the at least two real prefabricated prosthetic teeth (3) being processible from coronal (3.2) and/or from apical (3.3) in an material-ablating process, and correction factors (2) being assigned to the mounting (1) for spatial, real arrangement of the at least two prefabricated prosthetic teeth (3) in relation to a reference arrangement (A) of the corresponding real prefabricated reference prosthetic teeth (A3) in a real reference mounting (A1) of the mounting (1) or of corresponding virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1).

5. The mounting (1) according to claim 1, wherein the correction factors (2) have information on deviation in the spatial arrangement in the form of translation (x,y,z) data and/or on rotation of the respective outer shape of all the real prefabricated prosthetic teeth arranged in the mounting, (i) in relation to the information in a data set having data on the outer shape of corresponding prosthetic teeth in a real reference mounting (A1), and/or (ii) in relation to the information in a further data set having data on the outer shape of the corresponding virtual prefabricated reference prosthetic teeth (vA3), optionally in a virtual reference mounting (vA1).

6. The mounting (1) according to claim 1, wherein the one or the at least two real prosthetic teeth are fixed in the material of the moulded body (4a) such that the tooth axis (3.1) of the one or the at least two prosthetic teeth is arranged at an angle of 20 to 160 to the plane (1.1) of the mounting (1).

7. The mounting (1) according to claim 1, wherein a) the material of the at least one flat three-dimensional moulded body (4a) is wax, plastic or a hybrid material, b) the at least two clamping elements (4b) enclose, at least area by area, the at least one real prefabricated prosthetic tooth (3) or the at least two real prefabricated prosthetic teeth (3) in the area of their respective central outer periphery, the clamping elements (4b) having recesses, the inner surfaces of which fit, at least area by area, in a form-fitting manner to areas in the area of the central outer periphery of the prosthetic teeth.

8. A method for determining the correction factors (2) of the spatial arrangement of the at least one real prefabricated prosthetic tooth (3) in the mounting (1) according to claim 1, in relation to a reference arrangement (A) of at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) or of at least one virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1), in which the mounting (1) with the plane (1.1) in which at least one flat three-dimensional moulded body (4a) is arranged, at least one real prefabricated prosthetic tooth (3) being fixed in the moulded body (4a), the tooth axis (3.1) of which tooth is arranged at an angle of 20 to 160 to the plane (1.1) of the mounting (1), or the mounting (1) with the plane (1.1) in which at least two clamping elements (4b) are arranged such, at least one real prefabricated prosthetic tooth (3) being fixed between the clamping elements (4b), the tooth axis (3.1) of which is arranged at an angle of 20 to 160 to the plane (1.1) of the mounting (1), the three-dimensional information on arrangement of the outer shape of the at least one real prefabricated prosthetic tooth (3) in the mounting (1) is digitally captured by means of a scanner (5), and digital information on spatial, real arrangement (6) is obtained, digital information on real arrangement (6) is compared with digital data having information on spatial arrangement of the reference arrangement (A) of at least one corresponding real prefabricated reference prosthesis tooth (A3) in a real reference mounting (A1) of the mounting (1) or of the at least one virtual prefabricated reference prosthesis tooth (vA3), optionally in a virtual reference mounting (vA1) of the mounting (1), digital correction factors (2) are determined in relation to the data of the reference arrangement (A), and the correction factors (2) are determined.

9. The method according to claim 8, wherein the digital correction factors (2) are assigned to the mounting (1) or are arranged on the mounting (1) as barcode or as quick-response code (QR code).

10. A method comprising: assigning a connection geometry to a mounting for fastening the mounting to a CAM machine, wherein the connection geometry is based on digital correction factors (2) for coronal (3.2) and/or apical (3.3) processing of at least one real prefabricated prosthetic tooth in the mounting (1) for use in a material-ablating process.

11. The method according to claim 10, wherein the digital correction factors (2) comprising information on deviation in the spatial actual arrangement in the form of translation (x,y,z) data, or x,y,z coordinates and/or rotation data of the respective outer shape of the respective at least one real prefabricated prosthetic tooth (3) in relation to a reference arrangement (A), of at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) and/or of at least one virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1), are read into a digital data processing apparatus, and (i) provided digital translation (x,y,z) data and/or digital rotation data of the at least one virtual or real prefabricated prosthetic tooth (3) in relation to the reference arrangement (A), (ii) are corrected for the translation (x,y,z) data and/or rotation data of the at least one real prefabricated prosthetic tooth (3) in the mounting (1), and (iii) obtaining an individualized data set of the mounting (1) containing at least one fixed real prefabricated prosthetic tooth (3).

12. An individualized data set (8) obtained in consideration of digital correction factors (2) based on the spatial arrangement of the at least one real prefabricated prosthetic tooth (3) in a mounting (1), the individualized data set comprising: digital translation (x,y,z) data and/or the digital rotation data of at least one virtual or real prefabricated prosthetic tooth (3) for ablative processing of the at least one real prefabricated prosthetic tooth (3) in the mounting (1) having a connection geometry for fastening the mounting (1) to a CAM machine.

13. A method for determining the digital data having information on translation (x,y,z) data or x,y,z coordinates and rotation of the respective outer shape of the at least one real prosthetic tooth of the reference arrangement (A) by capturing the outer shape of the at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) as reference arrangement (A), by three-dimensionally capturing the reference arrangement (A) by means of a scanner (5) and by digitally capturing three-dimensional information on arrangement of the outer shape of the at least one real prefabricated prosthetic tooth (3) in the mounting (1), and by obtaining the digital data having information on the spatial arrangement of the reference arrangement (A).

14. A method comprising: assigning a connection geometry to a mounting for fastening the mounting to a CAM machine, wherein the connection geometry is based on digital data having information on a spatial arrangement of a reference arrangement (A) for determining correction factors or digital correction factors (2) for coronal (3.2) and/or apical (3.3) processing of at least one real prefabricated prosthetic tooth in the mounting (1) in a material-ablating process.

15. Digital correction factors (2) comprising: a spatial arrangement of at least one real prefabricated prosthetic tooth (3) in a mounting (1) in relation to a reference arrangement (A) of at least one corresponding real prefabricated reference prosthetic tooth (A3) in a real reference mounting (A1) of the mounting (1) or of at least one virtual prefabricated reference prosthetic tooth (vA3), optionally in a virtual reference mounting (vA1) of the mounting (1).

Description

[0042] The figures show:

[0043] FIG. 1: A mounting 1 with real arrangement 6 having a plane 1.1 in which a flat three-dimensional moulded body 4a is arranged in which 8 real prefabricated prosthetic teeth 3 are fixed. The correction factors 2 are printed on the mounting 1 in the form of a QR code.

[0044] FIGS. 2a and 2b show a virtual model of an edentulous jaw for simulation of the occlusion of virtual prefabricated reference prosthetic teeth vA3 in a virtual denture base.

[0045] FIGS. 3a and 3b show the production of a real denture base 7 in a CAM process from the digital data of the virtual denture base, to which the real prefabricated reference prosthetic teeth A3 and optionally processed prosthetic teeth A3 are later attached.

[0046] FIG. 4 schematically shows scanning of the mounting 1 with a scanner 5 for digital capture of the three-dimensional information of the arrangement of the outer shape of the eight or five real prefabricated prosthetic teeth 3 in the mounting 1. In this context, digital information of the spatial real arrangement 6 of the real prosthetic teeth 3 is obtained. Subsequently, the digital information of the real arrangement 6 is compared with the digital data with information of the spatial arrangement of the reference arrangement A (method step and reference arrangement were not separately shown) of at least one corresponding real prefabricated reference prosthetic tooth A3 in a real reference mounting A1 of the mounting 1 or of the at least one virtual prefabricated reference prosthetic tooth vA3 with tooth axis 3.1, optionally in a virtual reference mounting vA1 of the mounting 1 (process step not shown), and the digital correction factors 2 are determined in relation to the data of the reference arrangement A. In so doing, the correction factors may be determined. The digital data of the prefabricated teeth to be adapted to the respective patient may be adapted to the initial situation in the mounting using these correction factors such that, in so doing, automated processing of the prefabricated teeth may directly be carried out with the correct initial data set in a CAM process. In methods according to the state of the art, the initial situation either had to be manually determined with the user previously or the prefabricated teeth were processed on the basis of the reference arrangement such that any deviation from the reference arrangement was not yet taken into account. Accuracy of fit of the prosthetic restoration and occlusion of the teeth are not guaranteed without taking the deviation into account.

[0047] FIG. 5 shows a denture base 7 with inserted prefabricated prosthetic teeth A3 processed with the correction factors according to the invention for try-in with the patient.

[0048] FIG. 6 shows corresponding finished denture bases 7 with prefabricated teeth outside and in the patient's mouth.

REFERENCE SIGNS

[0049] A reference arrangement (not shown) [0050] A1 real reference mounting of the mounting 1 with real prefabricated prosthetic teeth (not shown) [0051] A3 real prefabricated reference prosthetic tooth [0052] vA1 virtual reference mounting of the mounting 1 of virtual prefabricated prosthetic teeth (not shown) [0053] vA3 virtual prefabricated reference prosthetic teeth [0054] 1 Mounting, 1.1 plane of the mounting (1) [0055] 2 correction factor for the spatial, real arrangement (6) of the at least one real prefabricated prosthetic tooth (3) in relation to a reference arrangement (A), in particular digital correction factors as information, in particular digital data having information [0056] 3 real prefabricated prosthetic tooth, vA3 virtual prefabricated reference prosthetic tooth, [0057] 3.1 tooth axis [0058] 3.2 coronal [0059] 3.3 apical [0060] 4a three-dimensional, flat moulded body [0061] 4b clamping elements (not shown) [0062] 5 scanner [0063] 6 real arrangement [0064] 7 denture base [0065] 8 individualised data set