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Dental multicolour grinding block

A restoration and milling technology, used in dentistry, dental prostheses, dentures, etc., can solve the problems of unsatisfactory appearance of teeth and the inability to reduce the number of layers, and achieve the effect of good dispersion and good durability

Active Publication Date: 2020-06-30
IVOCLAR VIVADENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution has not yet been promoted because the necessary number of layers cannot thus be reduced, and also because, especially for teeth with low opacity, that is to say with transparent enamel material, the appearance of the teeth is not satisfactory

Method used

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  • Dental multicolour grinding block
  • Dental multicolour grinding block
  • Dental multicolour grinding block

Examples

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Embodiment Construction

[0067] exist figure 1 and 2 The milling blank 10 shown in is disk-shaped in a manner known per se and has a diameter of approximately 100 mm. The milled blank 10 has a height of 20 mm.

[0068] The milled blank also has, in a manner known per se, a surrounding raised edge 12 for clamping in a corresponding holder of a milling machine.

[0069] In the embodiment shown, the milled blank has three layers, namely an enamel layer 14 , an intermediate layer 16 and a dentin layer 18 .

[0070] Between the three layers 14 to 18 there is a transition zone in each case, a transition zone 20 between the enamel layer 14 and the intermediate layer 16 and a transition zone 22 between the intermediate layer 16 and the dentin layer 18 .

[0071] Each transition zone 20 and 22 has a specific transition geometry according to the invention, which extends three-dimensionally and according to the invention has circular surfaces 30 pointing in both directions of extension, as referenced below ...

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Abstract

A dental multi-colored milling blank having at least two layers (16), a transition zone, where material from both layers is present. In the transition zone, a transition geometry exists that extends three-dimensionally. The transition geometry comprises round surfaces facing towards both directions of extension of the layers.

Description

technical field [0001] The invention relates to a dental multi-colour milled blank according to the preamble of claim 1 and to an additively produced dental restoration according to the preamble of claim 16 . Background technique [0002] It has long been known to use milled blanks in the form of blocks or disks for producing teeth, or alternatively to construct corresponding teeth additively. [0003] The manufacture can be based on plastics, composites or ceramics and seeks to simulate the appearance of natural teeth. [0004] Natural teeth are mainly composed of dentin covered by a layer with enamel. The layer thickness of the enamel is different, and due to the transparency of the enamel, the configuration of the dentin has an influence on the visual effect. [0005] Therefore, when imitating the production of artificial teeth, a corresponding layer structure is usually selected so that a less transparent tooth material layer is arranged behind the transparent tooth ma...

Claims

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Application Information

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IPC IPC(8): A61C13/00A61C13/08A61C13/09
CPCA61C13/0022A61C13/09A61C13/082A61C13/01A61C2201/002Y10T428/216B32B2535/00B32B3/30
Inventor K·哈根布奇C·A·黑费勒K·兰巴赫M·米特霍夫D·施普伦格
Owner IVOCLAR VIVADENT AG
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