公开(公告)号：US20200156989A1

公开(公告)日：2020-05-21

申请号：US16748143

申请日：2020-01-21

申请人： Ivoclar Vivadent AG

发明人： Christian Ritzberger ,  Ricardo Dellagiacomo ,  Marcel Schweiger ,  Harald Bürke ,  Wolfram Höland ,  Volker Rheinberger

IPC分类号： C03C10/00 ,  C03C4/00 ,  A61C5/77 ,  C04B37/04 ,  C04B35/645 ,  A61K6/82 ,  A61K6/807 ,  A61K6/813 ,  A61K6/816 ,  A61K6/818 ,  A61K6/822 ,  A61K6/824 ,  A61K6/833 ,  A61K6/836 ,  A61K6/853 ,  C03C3/095 ,  C03C14/00 ,  A61C13/00 ,  C03B32/02 ,  C09K11/02 ,  C03C3/097 ,  A61C5/73 ,  A61C8/00 ,  A61C13/08 ,  A61C13/083 ,  A61C13/09 ,  C03C8/02 ,  C04B35/48 ,  C04B41/00 ,  C04B41/50 ,  C04B41/86

摘要： Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.

公开(公告)号：US20210055157A1

公开(公告)日：2021-02-25

申请号：US17012113

申请日：2020-09-04

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. ,  VITA Zahnfabrik H. Rauter GmbH & Co. KG ,  DeguDent GmbH

发明人： Bernhard DURSCHANG ,  Jörn Probst ,  Norbert Thiel ,  Joachim Bibus ,  Markus Vollmann ,  Udo Schusser

IPC分类号： G01J1/44 ,  C03B32/02 ,  A61C5/35 ,  A61C5/70 ,  A61C5/77 ,  C03C3/097 ,  C03C4/00 ,  A61K6/82 ,  A61K6/818 ,  A61K6/833 ,  C03C10/00 ,  A61C13/083 ,  A61C13/00 ,  A61C13/01

摘要： The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

公开(公告)号：US20230338123A1

公开(公告)日：2023-10-26

申请号：US18029975

申请日：2021-09-23

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Michael Jahns ,  Hans R. Schnagl ,  Gallus Schechner

IPC分类号： A61C13/00 ,  A61K6/818 ,  A61K6/822 ,  A61K6/15 ,  A61K6/82

CPC分类号： A61C13/0022 ,  A61K6/818 ,  A61K6/822 ,  A61K6/15 ,  A61K6/82

摘要： The invention relates to a set of porous zirconia dental mill blanks comprising at least two differently colored porous zirconia dental mill blanks, the porous zirconia dental mill blanks comprising zirconia, yttria, coloring ions, and optionally alumina, comprising multiple layers with different yttria content, having a bottom layer and a top layer, the content of yttria and coloring ions in mol % changing in opposite direction to each other from the bottom layer to the top layer, and the content of yttria and coloring ions in mol % being adjusted to provide an essentially constant ratio of the sum of yttria and coloring ions in mol % between the top layer and the bottom layer for the at least two differently colored zirconia dental mill blanks. The invention also relates to a process of producing such a set.

公开(公告)号：US10968132B2

公开(公告)日：2021-04-06

申请号：US16382935

申请日：2019-04-12

申请人： James R. Glidewell Dental Ceramics, Inc.

发明人： Rodolfo Castillo

IPC分类号： C03B19/02 ,  A61L27/10 ,  C03C3/097 ,  C03C4/00 ,  C03C10/00 ,  A61K6/78 ,  A61K6/82 ,  A61K6/804 ,  A61K6/807 ,  A61K6/813 ,  A61K6/818 ,  A61K6/833 ,  C03B1/02 ,  C03B32/02 ,  C03C3/118

摘要： The present invention relates to a method of fabricating an improved lithium silicate glass ceramic and to that material for the manufacture of blocks for dental appliances using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 800° C. indicating that the samples will support the temperature process without shape deformation.

公开(公告)号：US20230131023A1

公开(公告)日：2023-04-27

申请号：US17784402

申请日：2020-11-13

申请人： INSTITUT STRAUMANN AG

发明人： Zoe KOELBING ,  Philippe CHAVANNE ,  Sven SIMEUNOVIC ,  Marc STEPHAN

IPC分类号： C04B41/45 ,  C04B41/00 ,  C04B35/626 ,  C04B35/64 ,  C04B41/86 ,  C04B41/50 ,  A61C13/00 ,  A61C13/08 ,  A61C13/083 ,  A61K6/824 ,  A61K6/818 ,  A61K6/82 ,  A61K6/802 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

摘要： The present invention relates to a method for additive manufacturing of a position sensitive colored ceramic article comprising: a) providing at least one flowable ceramic component; b) forming a green body by sequential deposition of the ceramic component provided in step a) and optionally a support material not intended to be part of the final article; c) position sensitive application of a coloring substance in a solvent to at least a part of the surface of the green body formed in step b), wherein the coloring substance is applied simultaneously to the sequential deposition; d) heat treatment or curing of at least a part of the green body surface obtained in step c); wherein the method steps a)-d) are at least performed once; e) optionally removing the support material from the green body; and f) sintering the green body to obtain the ceramic article; wherein the coloring substance is a dyestuff according to ISO 18451-1:2019(E). In addition, the present invention relates to a system adapted to perform the method and a control data set configured, when implemented in an additive manufacturing system, to cause the system to execute the steps of the inventive method.

公开(公告)号：US20230099360A1

公开(公告)日：2023-03-30

申请号：US17852126

申请日：2022-06-28

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. ,  VITA Zahnfabrik H. Rauter GmbH & Co. KG ,  DeguDent GmbH

发明人： Bernhard DURSCHANG ,  Jörn PROBST ,  Norbert THIEL ,  Joachim BIBUS ,  Markus VOLLMANN ,  Udo SCHUSSER

IPC分类号： A61K6/818 ,  A61K6/833 ,  A61C5/70 ,  A61C13/083 ,  C03C4/00 ,  A61C13/00 ,  A61C13/01 ,  C03B32/02 ,  A61C5/35 ,  C03C10/00 ,  A61K6/82 ,  C03C3/097 ,  A61C5/77

摘要： The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallization and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

公开(公告)号：US11339095B2

公开(公告)日：2022-05-24

申请号：US15574646

申请日：2016-05-26

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Helmar B. Mayr ,  Malte Korten ,  Christine M. Andres ,  Brant U. Kolb ,  Holger Hauptmann ,  Gallus Schechner ,  Michael Jahns ,  Kathleen M. Humpal ,  Melissa A. Lackey ,  Paul D. Pennington

IPC分类号： C04B35/486 ,  B28B1/00 ,  A61C13/00 ,  A61C13/083 ,  C04B35/624 ,  C04B35/64 ,  A61C5/73 ,  A61C5/77 ,  A61C13/09 ,  B33Y70/00 ,  A61C5/70 ,  A61K6/17 ,  A61K6/82 ,  A61K6/802 ,  A61K6/807 ,  A61K6/818 ,  A61K6/822 ,  B33Y10/00 ,  B33Y80/00

摘要： The invention relates to the use of a printing sol as construction material in an additive manufacturing process for producing a 3-dim article, the printing sol comprising solvent(s), nano-sized crystalline zirconia particles in an amount from 2 to 25 vol.-% with respect to the volume of the sol, the average primary particle size of the nano-sized crystalline zirconia particles being in a range up to 50 nm, a first monomer being a polymerizable surface modification agent represented by formula A-B, with A being capable of attaching to the surface of the nano-sized crystalline zirconia particles and B being a radiation curable group, optionally a second monomer, the second monomer comprising at least one radiation curable moiety but no acidic or silane group(s), photo initiator(s). The invention also relates to a ceramic article obtainable according to such a process.

公开(公告)号：US10765496B2

公开(公告)日：2020-09-08

申请号：US16227429

申请日：2018-12-20

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. ,  VITA Zahnfabrik H. Rauter GmbH & Co. KG ,  DeguDent GmbH

发明人： Bernhard Durschang ,  Jörn Probst ,  Norbert Thiel ,  Joachim Bibus ,  Markus Vollmann ,  Udo Schusser

IPC分类号： C03C10/00 ,  A61C13/083 ,  A61K6/027 ,  A61C13/00 ,  C03B32/02 ,  A61C5/35 ,  A61C5/70 ,  A61C5/77 ,  C03C3/097 ,  C03C4/00 ,  A61K6/82 ,  A61K6/818 ,  A61K6/833 ,  A61C13/01

摘要： The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.