Holding device for a denture or base structure model

• US 20050100856A1
• Filed: 12/03/2001
• Published: 05/12/2005
• Est. Priority Date: 12/12/2000
• Status: Active Grant

• Current Assignee: ETH Zurich
• Original Assignee: ETH Zurich
• Inventors: Gauckler, Ludwig, Kreuder, Peter, Fecher, Stefan, Hoerhold, Heiner, Kocher, Peter, Schaerer, Peter, Luethy, Heinz, Filser, Frank
• Granted Patent: US 7,101,180 B2
• Time in Patent Office: Days
• US Class Current: 433/49
• CPC Class Codes: A61C 13/0003 Making bridge-work, inlays, implants or the like
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 13/0022 Blanks or green, unfinished dental restoration parts
• CPC Class Codes: A61C 5/77 Methods or devices for making crowns
• CPC Class Codes: B25B 1/2421 the parts having a linear movement
• CPC Class Codes: B25B 5/14 Clamps for work of special profile using chains or strips B25B1/205

Abstract

A holding device that can be braced in a surveying machining together with an individual preparation model produced by dental laboratory techniques. The holding device has a mechanically stable frame with bores disposed at a distance (a) to one another, in which at least two holding pins are locked that can be displaced at least in the axial direction (A).

Claims

1-10. -10. (canceled)

11. A holding device for holding an individual preparation model produced by dental technology comprises a frame having at least two holes arranged at a spacing (a), a holding pin located in each of the two holes, each holding pin having an end face having a bonding agent for engaging a preparation model, means for locking the holding means in engagement with the preparation model for holding the preparation model within the frame, and clamping means on an external peripheral surface of the frame for fixing the frame into a measuring machine.

12. A holding device according to claim 11, wherein the frame is designed to be one of closed and U-shaped with sides extending substantially over the dimensions of the preparation model.

13. A holding device according to claim 11, wherein the frame is one of square and rectangular.

14. A holding device according to claim 11, wherein the holes extend in a plane which is perpendicular to an inner face surface of the frame.

15. A holding device according to claim 11, wherein a wax adhesive is applied on the end face as the bonding agent.

16. A holding device according to claim 11, wherein at least a part of the holding pins have an external thread and the corresponding holes have an internal thread.

17. A holding device according to claim 11, wherein the frame is designed in at least two parts, comprising a fixed guide rail and lockable slide, the slide having the holes for the holding pins.

18. A holding device according to claim 17, wherein the slide which is longitudinally displaceable on one of a dovetail-shaped, I-shaped, and T-shaped guided rail includes pivotable heads having holes for the holding pins.

19. A holding device according to claim 17, wherein the slides with holes for the holding pins, are formed on cylindrically designed fixed guide rails.

20. A method for positioning a preparation model in a holding device according to claim 11, comprising the steps of inserting the holding pins in the relevant hole and placed with the bonding agent applied to the end face of the preparation model, and locking all the holding pins so as to be secured against displacement and rotation against the preparation model.