公开(公告)号：US20210338389A1

公开(公告)日：2021-11-04

申请号：US17375537

申请日：2021-07-14

Applicant: DENTSPLY SIRONA Inc.

Inventor： Lothar VOLKL ,  Martin KUTZNER ,  Heiner HORHOLD ,  Stefan FECHER

IPC: A61C13/00 ,  A61C13/083 ,  A61C13/08 ,  A61C13/09 ,  B28B1/16 ,  B28B11/24 ,  C04B35/488 ,  C04B35/645 ,  C04B37/00

Abstract: The invention relates to a blank from a ceramic material, wherein at least two layers of ceramic material of different compositions are filled into a die layer-by-layer and after filling of the layers they are then pressed and sintered, wherein after filling of a first layer this is structured on its surface in such a way that the first layer, viewed across its surface, differs in its height from region to region, and then a layer with a composition that differs from the first layer is filled as a second layer into the mold.

公开(公告)号：US20190076222A1

公开(公告)日：2019-03-14

申请号：US15701522

申请日：2017-09-12

Applicant: DENTSPLY SIRONA Inc.

Inventor： Lothar VOLKL ,  Stefan FECHER ,  Andreas GEBHARDT

IPC: A61C13/08 ,  A61C13/083 ,  A61C13/20 ,  A61C13/00 ,  C04B35/488

Abstract: The invention relates to a blank for the production of a molded body, in particular a dental reconstruction. The blank has a base and at least one region that emanates therefrom and projects above the base, from which at least a part of the molded body can be derived by working.

公开(公告)号：US20170273764A1

公开(公告)日：2017-09-28

申请号：US15464316

申请日：2017-03-20

Applicant: DENTSPLY SIRONA Inc.

Inventor： Lothar VOLKL ,  Stefan FECHER ,  Martin KUTZNER ,  Tanja OEFNER

IPC: A61C13/00 ,  C04B35/48 ,  A61K6/04 ,  A61K6/00 ,  A61C13/08 ,  A61K6/02

CPC classification number: A61C13/0022 ,  A61C13/082 ,  A61C13/083 ,  A61C13/09 ,  A61K6/0002 ,  A61K6/0094 ,  A61K6/024 ,  A61K6/025 ,  A61K6/0255 ,  A61K6/04 ,  C04B35/48 ,  C04B2235/3244 ,  C04B2235/40

Abstract: The invention relates to a method for manufacturing a colored blank, which contains zirconium dioxide and is intended for the manufacture of a dental restoration, whereby raw materials in powder form, at least some of which contain one coloring substance each, are mixed with, zirconium dioxide as the main ingredient, the resulting mixture is pressed and subsequently subjected to at least one thermal treatment. To generate the desired fluorescence, it is intended that in the raw materials in powder form one uses as coloring substances at least terbium, erbium, cobalt, as well as one substance that generates a fluorescence effect in the dental restoration, however not iron, aside from naturally occurring impurities.

公开(公告)号：US20170189146A1

公开(公告)日：2017-07-06

申请号：US15391301

申请日：2016-12-27

Applicant: DENTSPLY SIRONA Inc.

Inventor： Lothar VOLKL ,  Stefan FECHER

IPC: A61C13/08 ,  A61C5/77 ,  A61C5/73 ,  A61C13/00 ,  A61C13/09

CPC classification number: A61C13/081 ,  A61C5/73 ,  A61C5/77 ,  A61C13/0004 ,  A61C13/0022 ,  A61C13/083 ,  A61C13/09

Abstract: The invention relates to a method for the production of a dental restoration from a blank, which has regions or layers of ceramic materials with differing compositions, under use of the method steps, filling of the ceramic materials into a mold, pressing of the ceramic materials to form a blank, removal of the blank from the mold, temperature treatment of the blank, wherein the ceramic materials are filling into the mold in such a way that layers and/or regions after temperature treatment have a profile that is available as a digital set. There is then a virtual contouring of the dental restoration taking shrinkage into account, a virtual representation of the blank, positioning of the virtually represented dental restoration in the virtually represented blank taking into account the material characteristics of the layers and/or regions, determination of the data for the blank which correspond to the position of the virtually arranged dental restoration or the mold in the blank, as well as transfer of the data to a machine to produce the dental restoration from the blank.

公开(公告)号：US20190099244A1

公开(公告)日：2019-04-04

申请号：US15786030

申请日：2017-10-17

Applicant: DENTSPLY SIRONA Inc.

Inventor： Markus VOLLMANN ,  Lothar VOLKL ,  Stefan FECHER ,  Carsten WIESNER

IPC: A61C13/00 ,  B29C43/14 ,  A61C5/77 ,  A61C13/083 ,  A61K6/02

Abstract: The invention relates to a method for the production of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a mold and wherein the materials are pressed and after pressing are sintered. Thereby, a layer of the first ceramic material is filled into the mold, a first open cavity is formed in the layer, the second ceramic material is filled into the first open cavity and the materials are pressed together and are then heat-treated. Both the first ceramic material and the second ceramic material contain, or consists of, lithium silicate glass ceramic.

公开(公告)号：US20190046305A1

公开(公告)日：2019-02-14

申请号：US15671779

申请日：2017-08-08

Applicant: DENTSPLY SIRONA Inc.

Inventor： Andreas GEBHARDT ,  Stefan FECHER ,  Lothar VOLKL

IPC: A61C13/00

Abstract: The invention relates to a method for positioning a blank (116), which after insertion in a holder is in contact therewith, wherein the holder has a structural element. The blank (16) is positioned in the holder by means of an adapter (118), which is inserted in both the holder or the structural element and the blank, wherein the adapter positively engages with the holder or the structural element and with the blank.

公开(公告)号：US20240041574A1

公开(公告)日：2024-02-08

申请号：US18382340

申请日：2023-10-20

Applicant: DENTSPLY SIRONA Inc.

Inventor： Markus VOLLMANN ,  Lothar VOLKL ,  Stefan FECHER ,  Carsten WIESNER

IPC: A61C13/00 ,  A61C13/083 ,  A61C13/09 ,  A61C5/70 ,  A61C13/08 ,  A61K6/818 ,  A61K6/822 ,  A61K6/824 ,  A61K6/833 ,  A61C5/77 ,  B29C43/14

CPC classification number: A61C13/0022 ,  A61C13/083 ,  A61C13/09 ,  A61C5/70 ,  A61C13/082 ,  A61K6/818 ,  A61K6/822 ,  A61K6/824 ,  A61K6/833 ,  A61C5/77 ,  A61C13/0006 ,  B29C43/146 ,  B33Y80/00

Abstract: The invention relates to a method for the production of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a mold and wherein the materials are pressed and after pressing are sintered. Thereby, a layer of the first ceramic material is filled into the mold, a first open cavity is formed in the layer, the second ceramic material is filled into the first open cavity and the materials are pressed together and are then heat-treated. Both the first ceramic material and the second ceramic material contain, or consists of, lithium silicate glass ceramic.

公开(公告)号：US20200030064A1

公开(公告)日：2020-01-30

申请号：US16595556

申请日：2019-10-08

Applicant: DENTSPLY SIRONA INC.

Inventor： Lothar VOLKL ,  Martin KUTZNER ,  Tanja OEFNER ,  Stefan FECHER

IPC: A61C13/00 ,  A61C13/09 ,  A61C5/77 ,  A61C5/73 ,  A61C8/00 ,  A61C13/08 ,  B28B3/02 ,  C04B35/48 ,  C04B37/00 ,  C04B35/486 ,  B32B18/00 ,  A61C13/083

Abstract: The invention relates to a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.

公开(公告)号：US20180104031A1

公开(公告)日：2018-04-19

申请号：US15786631

申请日：2017-10-18

Applicant: DENTSPLY SIRONA Inc.

Inventor： Markus VOLLMANN ,  Lothar VOLKL ,  Stefan FECHER ,  Carsten WIESNER

IPC: A61C13/00 ,  A61K6/02 ,  A61C13/08

Abstract: The invention relates to a method for the production of a restoration from a blank consisting of, or containing, a lithium silicate glass ceramic, wherein at least two layers of ceramic material of different compositions are filled into a mold layer-by-layer and after filling of the layers they are then pressed and sintered, wherein after filling of a first layer this is structured on its surface in such a way that the first layer, viewed across its surface, differs in its height from region to region, and then a layer with a composition that differs from the first layer is filled as a second layer into the mold. After sintering the dental restoration is produced from the blank by mechanical working.

公开(公告)号：US20170258563A1

公开(公告)日：2017-09-14

申请号：US15388282

申请日：2016-12-22

Applicant: DENTSPLY SIRONA Inc.

Inventor： Lothar VOLKL ,  Martin Kutzner ,  Tanja Oefner ,  Stefan Fecher

IPC: A61C13/00 ,  C04B35/48 ,  C04B37/00 ,  A61C8/00 ,  A61C13/09 ,  A61C5/73 ,  A61C5/77 ,  B28B3/02 ,  A61C13/08

CPC classification number: A61C13/0022 ,  A61C5/73 ,  A61C5/77 ,  A61C8/0013 ,  A61C13/081 ,  A61C13/082 ,  A61C13/083 ,  A61C13/09 ,  B28B3/021 ,  B32B18/00 ,  C04B35/48 ,  C04B35/486 ,  C04B37/001 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/72 ,  C04B2235/765 ,  C04B2235/9607 ,  C04B2235/9653 ,  C04B2235/9661 ,  C04B2237/348 ,  C04B2237/58 ,  C04B2237/84

Abstract: The invention relates to a method for the preparation of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.