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公开(公告)号：US12268564B2
公开(公告)日：2025-04-08
申请号：US15701522
申请日：2017-09-12
Applicant: DENTSPLY SIRONA Inc.
Inventor： Lothar Volkl , Stefan Fecher , Andreas Gebhardt
IPC: A61C13/08 , A61C13/00 , A61C13/083 , A61C13/087 , A61C13/09 , A61C13/20 , 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.
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公开(公告)号：US10799326B2
公开(公告)日：2020-10-13
申请号：US15671779
申请日：2017-08-08
Applicant: DENTSPLY SIRONA Inc.
Inventor： Andreas Gebhardt , Stefan Fecher , Lothar Volkl
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 way 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.
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Patent Agency Ranking
公开(公告)号：US11090142B2
公开(公告)日：2021-08-17
申请号：US15388040
申请日：2016-12-22
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 method for the preparation of 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.
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公开(公告)号：US10441391B2
公开(公告)日：2019-10-15
申请号：US15464316
申请日：2017-03-20
Applicant: DENTSPLY SIRONA Inc.
Inventor： Lothar Volkl , Stefan Fecher , Martin Kutzner , Tanja Oefner
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.
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公开(公告)号：US11833003B2
公开(公告)日：2023-12-05
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 , A61C13/083 , A61C13/09 , A61C5/70 , A61C13/08 , A61K6/818 , A61K6/822 , A61K6/824 , A61K6/833 , A61C5/77 , B29C43/14 , B29C43/00 , B29C43/20 , B33Y80/00 , A61C9/00
CPC classification number: A61C13/0022 , A61C5/70 , A61C5/77 , A61C13/0006 , A61C13/082 , A61C13/083 , A61C13/09 , A61K6/818 , A61K6/822 , A61K6/824 , A61K6/833 , B29C43/146 , A61C9/0046 , B29C43/203 , B29C2043/147 , 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.
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公开(公告)号：US11464608B2
公开(公告)日：2022-10-11
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 , C04B35/486 , B32B18/00 , A61C13/083 , A61C8/00 , A61C13/08 , B28B3/02 , C04B35/48 , C04B37/00
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.
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公开(公告)号：US10531938B2
公开(公告)日：2020-01-14
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 , A61C13/08 , A61K6/02 , C03C10/00 , C03C4/00 , A61C13/083 , C03C3/097 , A61C8/00 , A61C13/01 , A61K6/06 , C04B41/51
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.
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