Nova Patents
EP1900341A1

Multicolored moulded body

Abstract

Die vorliegende Erfindung betrifft einen mehrfarbigen Formkörper mit aufeinander gelagerten Schichten zur Herstellung von Dentalrestaurationen, Verfahren zu dessen Herstellung und seine Verwendung zur Herstellung dentaler Restaurationen.

Term

Term ended

Projected expiry passed 13 September 2026, 0 years ago.

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  2. Published
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19 claims: 11 independent, 8 dependent

  1. c-de-0001
    Multi-colored shaped body having layers successively mounted for the preparation of dental restorations, the (A) at least two successive and differently colored main layers and (B) has at least two differently colored intermediate layers between at least two successive and differently colored main layers, wherein between these intermediate layers is a change of color in a direction that is opposite to the direction of the change in color between the main layers.
  2. c-de-0003
    Multi-colored shaped body according to one of claims 1 or 2 wherein between the intermediate layers, an increase in brightness takes place in a direction which is opposite to the direction of the increase in brightness between the main layers.
  3. c-de-0004
    Multi-colored shaped body according to any one of the preceding claims, wherein the lying between two successive and differently colored main layers intermediate layers alternately have the colors of these old main layers.
  4. c-de-0005
    Multi-colored shaped body according to one of the preceding claims, wherein two intermediate layers are arranged between two successive and differently colored main layers and each of these intermediate layers, the color of the main layer has, adjacent to the respective other intermediate layer.
  5. c-de-0006
    Multi-colored shaped body according to any one of the preceding claims, comprising at least one element of four successive bearing layers, wherein (A) the first layer having a first main layer;(B) the second layer an intermediate layer having the color of the second main layer;(C) the third layer is an intermediate layer having the color of the first main layer;and (D) the fourth layer is a second main layer.
  6. c-de-0007
    Multi-colored shaped body according to any one of the preceding claims 4 to 20, preferably 4 to 10, particularly preferably 4 to 8 main and intermediate layers.
  7. c-de-0008
    Multi-colored shaped body according to any one of the preceding claims having eight successive bearing layers, wherein (A) the first layer having a first main layer;(B) the second layer is a second main layer;(C) the third layer is an intermediate layer having the color of the third main layer;(D) the fourth layer is an intermediate layer having the color of the second main layer;(E) the fifth layer is a third main layer;(F) the sixth layer an intermediate layer having the color of the fourth main layer;(G) the seventh layer an intermediate layer having the color of the third main layer;and (H) the eighth layer is a fourth main layer.
  8. c-de-0009
    Multi-colored shaped body according to any one of the preceding claims, wherein the main layers have a thickness of more than 0.5 mm, in particular more than 0.5 mm and up to 15 mm, preferably more than 0.5 mm and to 10 mm and particularly preferably 0.7 have mm to 8 mm.
  9. c-de-0010
    Multi-colored shaped body according to one of the preceding claims, wherein the intermediate layers have a thickness of up to 0.5 mm, in particular 0.01 mm to 0.5 mm, preferably 0.1 mm to 0.5 mm and particularly preferably 0.2 mm to have 0.4 mm.
  10. c-de-0011
    Multicolored tablets according to one of the preceding claims on the basis of ceramics, glass ceramics, plastics, inorganic-organic composite or mixtures thereof.
  11. c-de-0012
    Multi-colored shaped body according to one of the preceding claims, (A) SiO 2 ;(B) Al 2 O 3 ;and (C) K 2 O and / or Na 2 O contains.
  12. c-de-0013
    Multi-colored shaped body having layers successively mounted for the preparation of dental restorations, the (A) at least two successive and differently colored main layers and (B) comprises an intermediate layer between at least two successive and differently colored main layers, wherein the intermediate layer contains a mixture of the materials of the two successive main layers.
  13. c-de-0015
    Multi-colored shaped body according to one of claims 13 and 14, wherein the intermediate layer has a thickness of up to 0.5 mm, in particular 0.01 mm to 0.5 mm, preferably 0.1 mm to 0.5 mm and particularly preferably 0.2 mm to 0.4 mm.
  14. c-de-0016
    A method for producing a multi-colored shaped body according to one of claims 1 to 15, wherein the main layers and the intermediate layers are mounted to each other such that a shaped body is obtained according to one of claims 1 to 15th
  15. c-de-0017
    Use of a multi-colored shaped body according to one of claims 1 to 15 for the manufacture of dental restorations.
  16. c-de-0019
    Use according to one of claims 17 or 18, wherein the preparation of dental restorations computer-aided, in particular by means of CAD / CAM process is performed.
Independent claims16