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1. 发明授权

US12116320B2 Zirconia sintered body having high linear light transmittance 有权
公开(公告)号：US12116320B2
公开(公告)日：2024-10-15
申请号：US17436238
申请日：2020-03-05
申请人： KURARAY NORITAKE DENTAL INC.
发明人： Yasutaka Kudo
IPC分类号： C04B35/488 , C04B35/64 , C09K11/02
CPC分类号： C04B35/488 , C04B35/64 , C09K11/02 , C04B2235/3246 , C04B2235/5454 , C04B2235/656 , C04B2235/661 , C04B2235/76 , C04B2235/762 , C04B2235/765 , C04B2235/96 , C04B2235/9646 , C04B2235/9653 , C04B2235/9661
摘要： A zirconia sintered body may excel in translucency, strength, and linear light transmittance with no use of an HIP device, and a zirconia molded body and a zirconia pre-sintered body from which such a zirconia sintered body can be obtained. A zirconia molded body may include zirconia particles with 2.0 to 9.0 mol % yttria, an average primary particle diameter of 60 nm or less, and 0.5 mass % or less zirconia particles having a particle diameter >100 nm, wherein the zirconia molded body has ΔL*(W−B) of 5+ through a thickness of 1.5 mm. A zirconia pre-sintered body may include 2.0 to 9.0 mol % yttria, and have a ΔL*(W−B) of 5+ through a thickness of 1.5 mm. A zirconia sintered body may include: a fluorescent agent; 2.0 to 9.0 mol % yttria, and have a linear light transmittance of 1% or more through a thickness of 1.0 mm.

2. 发明公开

US20240315930A1 PASTE-FORM TWO-PACK TYPE DENTAL CURABLE COMPOSITION 审中-公开
公开(公告)号：US20240315930A1
公开(公告)日：2024-09-26
申请号：US18698839
申请日：2022-10-07
申请人： Kuraray Noritake Dental Inc.
发明人： Mitsuru TAKEI , Mariko KAWANA , Keishu OKADA
IPC分类号： A61K6/60 , A61K6/30 , A61K6/76 , A61K6/887
CPC分类号： A61K6/60 , A61K6/30 , A61K6/76 , A61K6/887
摘要： The present invention provides a paste-form two-pack type dental curable composition having an adequate working time range and superior bond strength to dentin, in addition to showing small variation in working time, small decline in bond strength to dentin, and low risk of paste solidification over extended storage. The present invention relates to a paste-form two-pack type dental curable composition comprising: a first agent that comprises an acidic group-containing polymerizable monomer (A), an acidic group-free polymerizable monomer (B), an organic peroxide (C), a nitrogen atom-containing ligand (D), and a filler (E); and a second agent that comprises an acidic group-free polymerizable monomer (B), a thiourea compound (F), and a filler (E).

3. 发明授权

US12090022B2 Mouthpiece and mouthpiece manufacturing method 有权
公开(公告)号：US12090022B2
公开(公告)日：2024-09-17
申请号：US17618195
申请日：2020-06-11
申请人： KURARAY NORITAKE DENTAL INC.
发明人： Misaki Ito , Kenji Suzuki
IPC分类号： B29C64/124 , A61C7/08 , B33Y10/00 , B33Y80/00 , B29C64/40
CPC分类号： A61C7/08 , B33Y10/00 , B33Y80/00 , B29C64/124 , B29C64/40
摘要： A method for manufacturing a mouthpiece includes manufacturing the mouthpiece that is to be placed within an oral cavity to cover teeth by an additive manufacturing device and laminating hardened layers not to form an annular lamination trace in a buccal portion that covers a buccal surface of a front tooth.

4. 发明公开

US20240164993A1 ORGANOSILICON COMPOUND AND DENTAL COMPOSITION CONTAINING SAME 审中-公开
公开(公告)号：US20240164993A1
公开(公告)日：2024-05-23
申请号：US18269347
申请日：2021-12-24
申请人： Kuraray Noritake Dental Inc.
发明人： Ryota MURAYAMA , Ryo MATSUURA , Yamato NOJIRI
IPC分类号： A61K6/30
CPC分类号： A61K6/30
摘要： The present invention provides a dental composition that shows improved adhesive properties to dental restoration materials such as porcelain, as well as tooth structure, and that is suited for reducing property changes during storage. The present invention relates to a dental composition comprising an organosilicon compound (A) represented by the following general formula (1),

Z—Xm—Y—SiR1nR2(3-n) (1)

wherein Z represents a (meth)acryloyloxy group, a (meth)acrylamide group, a mercapto group, or an epoxy group, X represents a divalent organic group with a ratio C/O of 1 to 3, where C is the total number of carbon atoms, and O is the total number of oxygen atoms, Y represents a divalent hydrocarbon group having 1 to 30 carbon atoms, R1 represents a group selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group, R2 represents a hydroxyl group or a hydrolyzable group, m represents an integer of 1 to 8, and n represents 0, 1, or 2, and wherein R1, R2, and X each may be the same or different when R1, R2, or X is plural.

5. 发明公开

US20240074945A1 CURABLE COMPOSITION FOR DENTAL RESTORATION 审中-公开
公开(公告)号：US20240074945A1
公开(公告)日：2024-03-07
申请号：US18269806
申请日：2021-12-28
申请人： Kuraray Noritake Dental Inc.
发明人： Masashi INOUE , Seiya ICHIKAWA
IPC分类号： A61K6/887 , A61C13/00 , A61K6/871
CPC分类号： A61K6/887 , A61C13/0022 , A61K6/871
摘要： The present invention provides a dental restorative curable composition that has high mechanical strength and toughness and has excellent water resistance and smoothness/gloss durability in the form of a cured product, a dental composite resin comprising the dental restorative curable composition, and a dental mill blank comprising a cured product of the dental restorative curable composition. The present invention relates to a dental restorative curable composition comprising: a (meth)acrylic acid ester compound (A) which has at least one polymer structure selected from the group consisting of a polycarbonate, a polyarylate, and an aromatic polysulfone and in which terminal hydroxy residues derived from repeating units constituting the polymer structure are directly (meth)acryloylated; a (meth)acrylic acid ester compound (B) having two or more (meth)acryloyloxy groups (excluding the (meth)acrylic acid ester compound (A)); an inorganic filler (C) having an average primary particle diameter of 0.01 to 5 μm; and a polymerization initiator (D).

6. 发明公开

US20240059620A1 DENTAL CERAMIC COLORING SOLUTION 审中-公开
公开(公告)号：US20240059620A1
公开(公告)日：2024-02-22
申请号：US18029724
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： C04B41/50 , C04B35/48 , C04B41/46 , C04B41/85 , A61K6/818 , A61K6/78
CPC分类号： C04B41/5012 , C04B35/48 , C04B41/46 , C04B41/85 , A61K6/818 , A61K6/78
摘要： The present invention provides a dental ceramic coloring solution with which the pink shade needed for dental use can be imparted while reducing a decrease in the strength of a dental ceramic. The present invention relates to a coloring solution for coloring a dental ceramic, comprising a coloring component and a solvent, wherein the coloring component comprises an Er component and a Co component.

7. 发明公开

US20240050323A1 ZIRCONIA COMPOSITION, PARTIALLY SINTERED MATERIAL AND SINTERED MATERIAL AND METHODS FOR PRODUCTION THEREOF, AND LAMINATE 审中-公开
公开(公告)号：US20240050323A1
公开(公告)日：2024-02-15
申请号：US18384007
申请日：2023-10-26
申请人： KuRARAY NORITAKE DENTAL INC.
发明人： Yoshihisa ITO
IPC分类号： A61K6/818 , A61C5/70 , A61C13/083 , C04B35/486 , C01G25/02
CPC分类号： A61K6/818 , A61C5/70 , A61C13/083 , C04B35/486 , C01G25/02
摘要： A composition may include granules in which zirconia particles are aggregated. The granules may have an average circularity of 0.81 or greater based on a projected image. The zirconia crystal system of the zirconia particles may be 20% or more monoclinic. An angle of repose of the composition, measured in accordance with JIS R9301-2-2, may be in a range of from 20 degrees to 35 degrees.

8. 发明授权

US11890359B2 Zirconia composition, partially sintered material and sintered material and methods for production thereof, and laminate 有权
公开(公告)号：US11890359B2
公开(公告)日：2024-02-06
申请号：US17226571
申请日：2021-04-09
申请人： KURARAY NORITAKE DENTAL INC.
发明人： Yoshihisa Ito
IPC分类号： C04B35/486 , A61K6/818 , A61C5/70 , A61C13/083 , C01G25/02
CPC分类号： A61K6/818 , A61C5/70 , A61C13/083 , C01G25/02 , C04B35/486
摘要： A composition includes granules in which zirconia particles are aggregated. The granules have an average circularity of 0.81 or greater based on a projected image.

9. 发明授权

US11884595B2 Zirconia composition, pre-sintered body and sintered body, and method of producing the same 有权
公开(公告)号：US11884595B2
公开(公告)日：2024-01-30
申请号：US17932459
申请日：2022-09-15
申请人： KURARAY NORITAKE DENTAL INC.
发明人： Yoshihisa Ito
IPC分类号： C04B35/48 , A61C5/73
CPC分类号： C04B35/48 , A61C5/73 , C04B2235/3225 , C04B2235/785 , C04B2235/9646
摘要： A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 μm to 0.17 μm. At least a portion of the stabilizer does not form a solid solution with zirconia.

10. 发明公开

US20230363868A1 TO-BE-PROCESSED BODY FOR DENTISTRY 审中-公开
公开(公告)号：US20230363868A1
公开(公告)日：2023-11-16
申请号：US18027944
申请日：2021-09-24
申请人： Kuraray Noritake Dental Inc.
发明人： Shinichiro KATO , Atsushi MATSUMOTO
IPC分类号： A61C13/00 , C04B35/486
CPC分类号： A61C13/0022 , A61C13/0006 , C04B35/486 , C04B2235/3225 , C04B2237/348
摘要： The present invention provides a to-be-processed body for dentistry for preparing a dental prosthesis that faithfully reproduces a natural tooth as though dentin is present underneath enamel and influencing appearance when seen from a close distance, without requiring a complex structure or a complicated manufacturing process. The present invention relates to a to-be-processed body for dentistry for preparing a dental prosthesis, the to-be-processed body for dentistry satisfying L3>L1 and L3>L2 on a straight line extending along a first direction from one end P to the other end Q of the to-be-processed body for dentistry, where:
L1 is the final L* according to L*a*b* color system over a black background at a first point lying in an interval from said one end P to 25% of the entire length,
L2 is the final L* according to L*a*b* color system over a black background at a second point lying in an interval from said other end Q to 25% of the entire length, and
L3 is the final L* according to L*a*b* color system over a black background at a third point lying between the first point and the second point on a straight line connecting the first point to the second point.

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