公开(公告)号：US12251277B2

公开(公告)日：2025-03-18

申请号：US17592677

申请日：2022-02-04

Applicant: DENTSPLY SIRONA INC.

Inventor： Stefan Fecher ,  Lothar Völkl ,  Sven Giese ,  Tobias Rösch ,  Andreas Gebhardt

IPC: A61C13/00 ,  A61C13/20 ,  B28B3/02 ,  B28B3/08 ,  B30B11/02 ,  B30B15/02 ,  A61C13/09 ,  A61C13/225 ,  B22F3/03 ,  B28B11/24

Abstract: A method for forming a multi-layer blank of a ceramic material including the steps of: providing a mold that includes at least one side wall surrounding a lower press plunger to form a cavity therebetween, wherein the lower press plunger has a movable pin; filling into the mold a first ceramic material; extending the movable pin from an upper surface of the lower press plunger and into the cavity; pressing a first upper press plunger against the first ceramic material so that a first open cavity is formed while at least a portion of the first upper press plunger is in contact with the movable pin to maintain the through-hole through the first layer; filling into the mold a second ceramic material of a different composition; extending the movable pin from an upper surface of the first layer and into the first open cavity; and pressing a second upper press plunger against the second layer so that a second open cavity is formed in communication with the through-hole that extends through the first and second layers to form the blank.

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.

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

IPC: A61C13/00 ,  B23Q3/18 ,  A61C13/08

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.