公开(公告)号：US20190274798A1

公开(公告)日：2019-09-12

申请号：US16408626

申请日：2019-05-10

Applicant: DENTSPLY SIRONA Inc.

Inventor： Martin Kutzner ,  Stefan Fecher ,  Lothar Völkl

IPC: A61C13/00 ,  A61C13/083 ,  B23Q3/02

Abstract: The invention relates to a support body for a blank, whereby the support body possesses a receiving opening for the blank that is surrounded by an inner circumferential surface, which terminates in an upper and a lower edge, and whereby a blank fixed in position within the support body is bonded to the latter by means of an adhesive agent. In order to be able to easily introduce the adhesive agent into a gap between the blank and the support body it is intended that the inner circumferential surface possesses at least one depression and/or elevation extending to accommodate the adhesive agent.

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.

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

IPC: A61C13/083 ,  A61C13/00 ,  A61C13/08 ,  A61K6/00 ,  A61K6/02 ,  A61K6/04 ,  C04B35/48 ,  A61C13/09

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.