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41. 发明公开

US20240059617A1 Highly Translucent Zirconia Material, Device, Methods of Making the Same, and Use Thereof 审中-公开
公开(公告)号：US20240059617A1
公开(公告)日：2024-02-22
申请号：US18501681
申请日：2023-11-03
申请人： James R. Glidewell Dental Ceramics, Inc.
发明人： Yan Yang , Sreeram Balasubramanian
IPC分类号： C04B35/48 , A61K6/824 , A61K6/818
CPC分类号： C04B35/48 , A61K6/824 , A61K6/818 , C04B2235/3225 , C04B2235/3246 , C04B2235/5436 , C04B2235/5463 , C04B2235/77 , C04B2235/9646
摘要： A zirconia ceramic material for use in dental applications is provided comprising an yttria-stabilized zirconia material stabilized with 5 mol % yttria to 8 mol % yttria, and methods for making a sintered body from the ceramic material. The zirconia ceramic materials exhibit both enhanced translucency and a flexural strength of at least 300 MPa, or at least 500 MPa, when fully sintered.

42. 发明公开

US20240041574A1 METHOD FOR THE PRODUCTION OF A BLANK, BLANK AND A DENTAL RESTORATION 审中-公开
公开(公告)号：US20240041574A1
公开(公告)日：2024-02-08
申请号：US18382340
申请日：2023-10-20
申请人： DENTSPLY SIRONA Inc.
发明人： Markus VOLLMANN , Lothar VOLKL , Stefan FECHER , Carsten WIESNER
IPC分类号： A61C13/00 , A61C13/083 , A61C13/09 , A61C5/70 , A61C13/08 , A61K6/818 , A61K6/822 , A61K6/824 , A61K6/833 , A61C5/77 , B29C43/14
CPC分类号： 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
摘要： 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.

43. 发明公开

US20240033186A1 ZIRCONIA SINTERED BODY CONTAINING NEEDLE-SHAPED METAL OXIDE 审中-公开
公开(公告)号：US20240033186A1
公开(公告)日：2024-02-01
申请号：US18268634
申请日：2021-12-20
申请人： Kuraray Noritake Dental Inc.
发明人： Takahiro NIWA
IPC分类号： A61K6/818 , A61K6/824 , A61K6/17
CPC分类号： A61K6/818 , A61K6/824 , A61K6/17
摘要： The present invention provides a zirconia sintered body that has high strength and is machinable. The present invention relates to a zirconia sintered body comprising zirconia, a stabilizing agent capable of preventing a phase transformation of zirconia, a sintering aid, and a needle-shaped metal oxide. Preferably, the sintering aid comprises niobium pentoxide, and the content of the niobium pentoxide is 5 to 15 parts by mass with respect to total 100 parts by mass of the zirconia and the stabilizing agent. Preferably, the stabilizing agent comprises yttria, and the content of the yttria is 2.5 to 10 mol % with respect to the total number of moles of the zirconia and the yttria.

44. 发明公开

US20230404723A1 PROCESS FOR THE PREPARATION OF A ZIRCONIA BLANK 审中-公开
公开(公告)号：US20230404723A1
公开(公告)日：2023-12-21
申请号：US18459775
申请日：2023-09-01
申请人： Ivoclar Vivadent AG
发明人： Bo Jiang , Christian Ritzberger , Frank Rothbrust
IPC分类号： A61C13/00 , B28B1/26 , C04B35/486 , A61K6/818
CPC分类号： A61C13/0022 , A61C13/0006 , B28B1/26 , C04B35/486 , A61K6/818 , C04B2235/3246 , C04B2235/6027 , C04B2235/606 , C04B2235/661 , C04B35/64
摘要： A zirconia blank produced by introducing a zirconia suspension into a porous mould and demoulding the blank formed as well as the use of the optionally presintered blank formed for the preparation of a dental restoration using a very short dense-sintering process.

45. 发明公开

US20230382808A1 METHOD FOR PRODUCING ZIRCONIA SINTERED BODY 审中-公开
公开(公告)号：US20230382808A1
公开(公告)日：2023-11-30
申请号：US18027680
申请日：2021-09-24
申请人： Kuraray Noritake Dental Inc.
发明人： Atsushi MATSUURA
IPC分类号： C04B35/48 , A61K6/818
CPC分类号： C04B35/48 , A61K6/818 , C04B2235/3225 , C04B2235/6562 , C04B2235/6567
摘要： The present invention provides a method of production of a zirconia sintered body by which a zirconia molded body or zirconia pre-sintered body having a plurality of layers containing different amounts of stabilizer is sintered in a short time period to produce a zirconia sintered body having hardly noticeable stripes between layers differing in yttria content. The present invention relates to a method for producing a zirconia sintered body, comprising a firing step of firing a zirconia molded body or a zirconia pre-sintered body,

the zirconia molded body or the zirconia pre-sintered body comprising a plurality of layers containing a stabilizer,
the plurality of layers including layers having different stabilizer contents,
the firing step comprising at least three stages of temperature-increasing process including a first temperature-increasing step (H1), a second temperature-increasing step (H2), and a third temperature-increasing step (H3),
the method satisfying HR2=more than 0° C./min and less than 50° C./min, HR3=5 to 150° C./min, and HR3/HR2>1, where HR2 is a rate of temperature increase in H2, and HR3 is a rate of temperature increase in H3,
the temperature-increasing process having start temperatures that are 1,000° C. or less in H1, more than 1,250° C. and 1,450° C. or less in H2, and 1,450° C. or more and 1,550° C. or less in H3,
the temperature-increasing process having end temperatures that are more than 1,250° C. and 1,450° C. or less in H1, 1,450° C. or more and 1,550° C. or less in H2, and 1,500° C. or more and 1,750° C. or less in H3.

46. 发明公开

US20230380944A1 DENTAL CERAMIC COLORING SOLUTION 审中-公开
公开(公告)号：US20230380944A1
公开(公告)日：2023-11-30
申请号：US18029692
申请日：2021-10-01
申请人： Kuraray Noritake Dental Inc
发明人： Hiroyuki SAKAMOTO , Nobusuke KASHIKI , Shinichiro KATO
IPC分类号： A61C13/08 , A61C13/083 , A61K6/818 , A61K6/78
CPC分类号： A61C13/082 , A61C13/083 , A61K6/818 , A61K6/78
摘要： The present invention provides a dental ceramic coloring solution with which the desired shade can be imparted to a dental ceramic while improving the strength of the dental ceramic. The present invention relates to a coloring solution for coloring a dental ceramic, comprising a coloring component, a solvent, and a Zr component.

47. 发明授权

US11787747B2 Polychromatic zirconia bodies and methods of making the same 有权
公开(公告)号：US11787747B2
公开(公告)日：2023-10-17
申请号：US17227546
申请日：2021-04-12
申请人： James R. Glidewell Dental Ceramics, Inc.
发明人： Dongkyu Kim , Akash
IPC分类号： C04B41/00 , C04B41/45 , C04B35/486 , C04B41/89 , A61K6/818 , C04B111/82
CPC分类号： C04B41/009 , A61K6/818 , C04B35/486 , C04B41/457 , C04B41/4535 , C04B41/89 , C04B2111/82 , C04B2235/3224 , C04B2235/3241 , C04B2235/3275 , C04B2235/44 , C04B2235/606 , C04B2235/616 , C04B2235/6567 , C04B2235/77 , C04B2235/9661 , C04B41/009 , C04B35/48 , C04B38/00 , C04B41/4578 , C04B41/4535 , C04B41/463 , C04B41/5007 , C04B2103/0018 , C04B41/4535 , C04B41/463 , C04B41/5007 , C04B2103/0021 , C04B41/4535 , C04B41/463 , C04B41/5007 , C04B2103/0022
摘要： A ceramic body is provided that is suitable for use in dental applications to provide a natural aesthetic appearance. A colorized ceramic body is formed that has at least one color region and a color gradient region. A ceramic body is formed having at least two color regions and a color gradient that forms a transition region between two color regions. A method for making the colorized ceramic body includes unidirectional infiltration of a coloring composition into the ceramic body.

48. 发明授权

US11738478B2 Process and slip for the production of ceramic shaped bodies made of zirconium oxide by 3D inkjet printing 有权
公开(公告)号：US11738478B2
公开(公告)日：2023-08-29
申请号：US16660156
申请日：2019-10-22
申请人： Ivoclar Vivadent AG
发明人： Christian Ritzberger , Johannes Renner
IPC分类号： B28B1/00 , A61K6/818 , C04B35/119 , C04B35/488 , B33Y10/00 , B33Y70/00 , B33Y80/00
CPC分类号： B28B1/001 , A61K6/818 , C04B35/119 , C04B35/488 , B33Y10/00 , B33Y70/00 , B33Y80/00 , C04B2235/3206 , C04B2235/3208 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/5454 , C04B2235/6567 , C04B2235/665
摘要： Process and slip for the production of ceramic shaped parts made of zirconium oxide ceramic by a 3D inkjet printing process. The slip contains zirconium oxide which is suspended in a liquid medium, wherein the slip has a zirconium oxide content of from 68 to 88 wt.-% and contains not more than 5 wt.-% organic components. The process for the production of ceramic components comprises the layered shaping and subsequent sintering of the desired component from the slip.

49. 发明授权

US11666421B2 Dental implant 有权
公开(公告)号：US11666421B2
公开(公告)日：2023-06-06
申请号：US16151966
申请日：2018-10-04
申请人： LAKEVIEW INNOVATION LTD.
发明人： Thorsten Buurlage
IPC分类号： A61C8/00 , A61C13/00 , A61C13/20 , A61K6/818
CPC分类号： A61C8/0068 , A61C8/0012 , A61C8/0066 , A61C13/0006 , A61C13/206 , A61K6/818
摘要： Dental implant with a base body made of ceramic anchorable in a jawbone and an implant superstructure attachable to the base body using a screw, wherein in an assembled state of the dental implant, a threaded portion of the screw engages with an inner thread formed in a blind hole of the base body, wherein the implant superstructure is by the screw pressed against the base body and wherein the engagement between the threaded portion of the screw and the internal thread of the blind hole occurs only in a lower half of the base body facing away from the implant superstructure.

50. 发明公开

US20240285479A1 METHOD OF MASKING A DENTAL SUPPORT STRUCTURE OF A DENTAL PROSTHESIS MADE OF HIGHLY TRANSLUCENT CERAMIC MATERIAL 审中-公开
公开(公告)号：US20240285479A1
公开(公告)日：2024-08-29
申请号：US18655570
申请日：2024-05-06
申请人： James R. Glidewell Dental Ceramics, Inc.
发明人： Yan Yang , Sreeram Balasubramanian , Yang Soon Park
IPC分类号： A61K6/818 , A61K6/15 , A61K6/84 , C04B35/48 , C04B35/63
CPC分类号： A61K6/818 , A61K6/15 , A61K6/84 , C04B35/48 , C04B35/6303 , C04B2235/3246 , C04B2235/9661
摘要： A method for masking the appearance of a support structure underlying a highly translucent ceramic dental restoration is provided. The porous form of a zirconia ceramic dental restoration is treated with a liquid masking composition comprising 0.4 wt % to 50 wt % of one or more masking agents. The masking composition is applied to the internal surface of a restoration and a region of the facial surface of the restoration that is opposite the internal surface. After application of the masking compositions, treated zirconia restoration is sintered to greater than 98% theoretical density.

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