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公开(公告)号：US12115032B2
公开(公告)日：2024-10-15
申请号：US18136575
申请日：2023-04-19
申请人： SHOFU INC.
发明人： Toshio Kitamura , Rieko Aiba
CPC分类号： A61C13/0022 , A61C13/0004 , A61C13/082
摘要： The present disclosure relates to a dental cutting zirconia blank having high relative density for preparing a dental restoration. More specifically, the present disclosure relates to a dental cutting zirconia blank which consists of a zirconia ceramics used for the cutting with the CAD/CAM system in the dental field, a semi-sinter zirconia blank (pre-sintered body) of which has high relative density, and which can provide a prosthesis device having high aesthetics after sintering. There is provided a dental cutting zirconia blank wherein the dental cutting zirconia blank has at least one layer consisting of zirconia powder containing 4 to 15 mol % of yttria or erbium oxide as a stabilizer, a relationship among pre-sintering density, final-sintering density and relative density satisfies the following relation:
54≤Relative density (%)={(Pre-sintering density)/(Perfect-sintering density)}×100≤70.-
公开(公告)号：US20240307273A1
公开(公告)日：2024-09-19
申请号：US18396126
申请日：2023-12-26
申请人： SHOFU INC.
发明人： Yosuke TANAKA , Masanori GOTO
IPC分类号： A61K6/802 , A61C13/08 , A61C13/083 , A61K6/76
CPC分类号： A61K6/802 , A61C13/082 , A61C13/083 , A61K6/76
摘要： [Problem]
To provide a dental porcelain paste that can maintain a constant paste property even during long-term storage, and that hardly generates carbonization and bubbles during firing even in the case of containing organic components.
[Solution]
To provide a dental porcelain paste for preparing a dental prosthesis device, comprising (a) base material glass having an average particle diameter D50 of 1 to 20 μm, (b) hydrophobized fine particle silica having an average primary particle diameter of 1 to 50 nm, (c) organic solvent having a boiling point of 100 to 300° C., and (d) inorganic salt.-
公开(公告)号：US20240173211A1
公开(公告)日：2024-05-30
申请号：US18222577
申请日：2023-07-17
申请人： SHOFU INC.
发明人： Jun UCHIDA , Shuji SAKAMOTO , Masahiro TSUKAMOTO
摘要： [Problem]
To provide a dental resin-reinforced glass ionomer cement kit which can exhibit high adhesive property to tooth substance by a simple procedure without complicated operations and contains a dental tooth surface treatment material composition and a dental resin-reinforced glass ionomer cement composition.
[Solution]
To provide a dental resin-reinforced glass ionomer cement kit comprising a dental tooth surface treatment material composition (i) and a dental resin-reinforced glass ionomer cement composition (ii), wherein
the dental tooth surface treatment material composition (i) contains
(A) water-soluble organic solvent: 20% by mass or more and 79% by mass or less.
(B) water: 20% by mass or more and 79% by mass or less, and
(C) polymerizable monomer having acid anhydride structure: 1% by mass or more and 30% by mass or less, and
the dental resin-reinforced glass ionomer cement composition (ii) contains
(D) acid-reactive glass powder,
(B) water,
(E′) polymer of acidic group-containing polymerizable monomer,
(F) tri or more functional (meth)acrylamide-based polymerizable monomer,
(G) hydroxyl group-containing (meth)acrylate-based polymerizable monomer, and
(H) polymerization initiator.-
公开(公告)号：US11759299B2
公开(公告)日：2023-09-19
申请号：US16829212
申请日：2020-03-25
申请人： SHOFU INC.
发明人： Namiki Niwa , Hidefumi Fujimura
IPC分类号： A61C13/00 , C08F2/50 , C08F20/16 , C08F20/20 , C08F22/12 , B33Y10/00 , B33Y70/00 , B33Y80/00 , B33Y40/20
CPC分类号： A61C13/0019 , A61C13/0013 , C08F2/50 , C08F20/16 , C08F20/20 , C08F22/12 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B33Y80/00
摘要： To provide a dental stereolithography-type three-dimensional printing material in which the total preparing time required from modeling with using a 3D printer to a final curing is short, work efficiency is excellent, temporal shrinkage deformation of a dental three-dimensional modeled object is suppressed and a dimensional accuracy is excellent. The dental stereolithography-type three-dimensional printing material of the present invention comprises at least one or more (a) monofunctional acrylate monomer having an aromatic ring and (b) photopolymerization initiator, wherein an electronegativity difference between adjacent atoms which are bonded by covalent bond in all atoms constituting the (a) monofunctional acrylate monomer having an aromatic ring is less than 1.0.
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公开(公告)号：US20230255734A1
公开(公告)日：2023-08-17
申请号：US18136575
申请日：2023-04-19
申请人： SHOFU INC.
发明人： Toshio KITAMURA , Rieko AIBA
CPC分类号： A61C13/0022 , A61C13/0004 , A61C13/082
摘要： The present disclosure relates to a dental cutting zirconia blank having high relative density for preparing a dental restoration. More specifically, the present disclosure relates to a dental cutting zirconia blank which consists of a zirconia ceramics used for the cutting with the CAD/CAM system in the dental field, a semi-sinter zirconia blank (pre-sintered body) of which has high relative density, and which can provide a prosthesis device having high aesthetics after sintering. There is provided a dental cutting zirconia blank wherein the dental cutting zirconia blank has at least one layer consisting of zirconia powder containing 4 to 15 mol % of yttria or erbium oxide as a stabilizer, a relationship among pre-sintering density, final-sintering density and relative density satisfies the following relation:
54≤Relative density (%)={(Pre-sintering density)/(Perfect-sintering density)}×100≤70-
公开(公告)号：US11660172B2
公开(公告)日：2023-05-30
申请号：US15805396
申请日：2017-11-07
申请人： SHOFU INC.
发明人： Toshio Kitamura , Rieko Aiba
CPC分类号： A61C13/0022 , A61C13/0004 , A61C13/082
摘要： The present disclosure relates to a dental cutting zirconia blank having high relative density for preparing a dental restoration. More specifically, the present disclosure relates to a dental cutting zirconia blank which consists of a zirconia ceramics used for the cutting with the CAD/CAM system in the dental field, a semi-sinter zirconia blank (pre-sintered body) of which has high relative density, and which can provide a prosthesis device having high aesthetics after sintering. There is provided a dental cutting zirconia blank wherein the dental cutting zirconia blank has at least one layer consisting of zirconia powder containing 4 to 15 mol % of yttria or erbium oxide as a stabilizer, a relationship among pre-sintering density, final-sintering density and relative density satisfies the following relation:
54≤Relative density(%)={(Pre-sintering density)/(Perfect-sintering density)}×100≤70.-
公开(公告)号：US20230082975A1
公开(公告)日：2023-03-16
申请号：US17828656
申请日：2022-05-31
申请人： SHOFU INC.
发明人： Kazumichi NONAKA , Shuhei TAKAHASHI
摘要： [Problem]
A technique for improving translucency in order to prepare a zirconia sintered body having high translucency without using special equipment, has been required.
[Solution]
To provide A sintering method for a dental zirconia calcined body containing 5.5 mol % to 7.0 mol % of a stabilizer, wherein the method satisfies the following (a) to (c). (a) an average rate of temperature increase in the section from room temperature to 1300° C. is 9° C./min or more. (b) an average rate of temperature increase in the section from 1300° C. to 1400° C. is 0.6° C./min or more and 3° C./min or less. (c) an average rate of temperature increase in the section from 1400° C. to the maximum temperature of the sintering process is 0.5° C./min or more and 2.5° C./min or less.-
公开(公告)号：US11504306B2
公开(公告)日：2022-11-22
申请号：US17032212
申请日：2020-09-25
申请人： SHOFU INC.
发明人： Shuji Sakamoto , Shun Shimosoyama , Katsuya Kimoto
摘要： A dental glass ionomer cement composition that exhibits high mechanical properties. In particular, the dental glass ionomer cement composition of the present disclosure comprising (a) non-crosslinked polyalkenoic acid, (b) water, (c) crosslinked polyalkenoic acid: 0.01 to 10 wt. %, and (d) acid-reactive glass powder, exhibits extremely high compressive strength by including the crosslinked polyalkenoic acid in the specified content range.
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公开(公告)号：US20220287920A1
公开(公告)日：2022-09-15
申请号：US17201165
申请日：2021-03-15
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Daisuke HARA , Shunsuke MIYATA
摘要： To provide a dental photocurable composition which can exhibit excellent mechanical characteristics even after returning from a low temperature to room temperature.
To provide a dental photocurable composition, comprising (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator and (D) photopolymerization accelerator and the (C) photoacid generator may include only (C-1) iodonium salt-based compound of an anion having log S of −4 or less.-
公开(公告)号：US11414340B2
公开(公告)日：2022-08-16
申请号：US16148033
申请日：2018-10-01
申请人： SHOFU INC.
发明人： Kazuki Yamamoto , Daisuke Takeuchi
摘要： To provide An Al2O3-free dental lithium silicate glass composition comprising the following components:
SiO2: 60.0 to 80.0% by weight
Li2O: 10.0 to 17.0% by weight
K2O: 0.5 to 10.0% by weight
a nucleating agent: 1.0 to 6.0% by weight
a colorant: 0.0 to 10.0% by weight, and,
a metal oxide Me(tetravalent)O2: 5.0 to 10.0% by weight.
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