Method for producing dental prostheses

A kind of imitation, dental technology, applied in the direction of dentistry, dental prosthesis, medical science, etc., can solve the problem of long milling time and so on

Active Publication Date: 2010-11-03
IVOCLAR VIVADENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is also clear that the machining of such blanks requires longer milling times
These significant limitations minimize the approbability of the technique presented here

Method used

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  • Method for producing dental prostheses
  • Method for producing dental prostheses
  • Method for producing dental prostheses

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 The arrangement of the machine for the machining of a blank 3 is shown. As mentioned several times above, the blank 3 is a plate-shaped structure and is vertically clamped in a clamping device 4 in at least one CAD / CAM processing station, whereby the spindle drive motor 1 and the associated milling cutter 2 The face of the blank 3 is machined in the horizontal direction. The blank 3 is clamped rotatably about an axis 5 in a clamping device 4 , wherein the blank 3 has a concentric turned annular groove 6 in the circumferential direction, to which the clamping device 4 acts in a non-positive connection . The horizontal machining of the blank 3 enables the closed and cavity shapes of the individual tooth imitations to be machined. Here the working positions are predetermined and converted to optimal control. The processing of the blank can be realized not only by CAD / CAM, but also by other cutting systems. The process preceding this machining process can be b...

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Abstract

The invention relates to a method for producing dental prostheses, such as bridges, crowns, implants etc., from a ceramic material, using at least one CAD / CAM processing station. The ceramic material to be worked consists of a disk-shaped blank (3) that has not been sintered or has not been subjected to a final sintering process. The blank for dental prostheses is worked at a right angle or almost at a right angle to the parallel or quasi-parallel surfaces thereof.

Description

technical field [0001] The invention relates to a blank for the manufacture of dental replicas such as dental bridge backbones, dental caps or implants. The invention also relates to a method for producing said blank. Background technique [0002] In WO 99 / 47065 a method and blanks for the manufacture of artificial crowns and / or bridges capable of protecting at least one pre-prepared tooth root have been disclosed. The three-dimensional outer and inner surfaces of a positive model for the backbone of the crown and / or bridge are scanned and digitized. The data obtained are linearly multiplied in all spatial directions by a factor that exactly compensates for the sintering shrinkage and are then transmitted to the control electronics of at least one processing machine for the processing of porous ceramic blanks, from which a suitable tool is derived distance. There, the material is removed in a temporally decoupled manner from the digitized data by means of control commands...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/00A61C5/77
CPCA61C13/0004A61C13/0022Y10T409/309016Y10T29/49996Y10T29/49567Y10T428/21Y10T29/49998Y10T428/24479Y10T29/51Y10T409/303808A61C5/77
Inventor U·布罗德贝克D·古布莱尔
Owner IVOCLAR VIVADENT AG
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