公开(公告)号：US11602490B2

公开(公告)日：2023-03-14

申请号：US17032335

申请日：2020-09-25

申请人： SHOFU INC.

发明人： Naoya Kitada ,  Rei Nishimura ,  Hiroyuki Kobayashi ,  Kenzo Yamamoto

IPC分类号： A61K6/30 ,  C08K5/5419 ,  C08L33/10 ,  C08L81/08

摘要： To provide one liquid type dental adhesive composition that exhibits excellent adhesive property to glass ceramics, oxide-base ceramics and tooth substance, and has excellent storage stability, which are contrary features. One liquid type dental adhesive composition contains (a) silane coupling agent represented by general formula (1), (b) acidic group-containing polymerizable monomer, (c) volatile organic solvent, and (d) water. (In the formula, R1 represents an organic group having at least one functional group selected from the group consisting of a (meth)acryloyl group, a vinyl group and an epoxy group, R2 represents C4-C8 linear alkyl group, R3 represents C1-C8 alkyl group, and n is integer selected from 1 to 3.)

公开(公告)号：US20220387263A1

公开(公告)日：2022-12-08

申请号：US17692584

申请日：2022-03-11

申请人： SHOFU INC.

发明人： Naoya KITADA ,  Rei NISHIMURA ,  Daisuke HARA ,  Kenzo YAMAMOTO

IPC分类号： A61K6/896 ,  A61K6/62 ,  A61K6/76 ,  A61K6/17

摘要： To provide a dental photocurable composition having good storage stability of a matrix containing a polymerizable monomer and a polymerization initiator, etc. and excellent mechanical strength of a dental photocurable composition comprising a mixture of the matrix and a filler. The dental photocurable composition of the present disclosure comprises a matrix containing (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator and (D) photopolymerization accelerator, and (E) filler, wherein, the dental photocurable composition comprises (A1) polymerizable monomer having an acidic group as the (A) polymerizable monomer, and the dental photocurable composition comprises (D1) tertiary aliphatic amine compound having Log P of 2 or more and pKa of 10 or less as the (D) photopolymerization accelerator.

公开(公告)号：US20220202544A1

公开(公告)日：2022-06-30

申请号：US17502376

申请日：2021-10-15

申请人： SHOFU INC.

发明人： Kazumichi NONAKA ,  Shuhei TAKAHASHI

IPC分类号： A61C13/08 ,  A61C13/00 ,  A61C13/083

摘要： [Problem]
A technique for imparting high translucency which is similar to an enamel of a natural tooth to a zirconia sintered body, has been required.
[Solution]
To provide a zirconia mill blank for dental cutting and machining, containing, an yttrium compound and an indium compound as stabilizers, wherein, an amount of the yttrium compound is within a range of 3.0 mol % to 6.0 mol % in terms of oxide, an amount of the indium compound is within a range of 0.2 mol % to 3.0 mol % in terms of oxide, and a total amount of the yttrium compound and the indium compound is within a range of 5.5 mol % to 7.0 mol % in terms of oxide.

公开(公告)号：US20210401552A1

公开(公告)日：2021-12-30

申请号：US17193466

申请日：2021-03-05

申请人： SHOFU INC.

发明人： Kazumichi NONAKA ,  Shuhei TAKAHASHI ,  Mitsuji TERAMAE

IPC分类号： A61C13/00 ,  A61C13/083 ,  B32B18/00

摘要： [Problem]
To provide a zirconia mill blank for dental cutting and machining which may impart reproducibility of color tone similar to a natural tooth and high strength to a zirconia perfect sintered body without a special sintering method such as HIP treatment.
[Solution]
A zirconia mill blank for dental cutting and machining comprises at least two intermediate layers LA and LB which satisfy the following Formula (1) and Formula (2), wherein the layer LA is contained in a section A in which a distance from one plane of two planes is within 40% of the distance between the two planes and the layer LB is contained in a section B in which a distance from the other plane is within 40% of the distance between the two planes, wherein in a case in which, a sintered body prepared by sintering at 1550° C. a test specimen cut out from the layer LA is defined as sintered body SA, a sintered body at 1550° C. prepared by sintering a test specimen cut out from the layer LB is defined as sintered body SB, a contrast ratio of the sintered body SA at a sample having a thickness of 1 mm is defined as contrast ratio CA and a contrast ratio of the sintered body SB at a sample having a thickness of 1 mm is defined as contrast ratio CB, the contrast ratios CA and CB satisfy the following Formula (3), change directions of yttria concentration, alumina concentration and contrast ratio in a stacking direction are not changed by the at least two intermediate layers. Yttria concentration of layer LA−Yttria concentration of layer LB>1.0 mol %  Formula (1): 0.0 wt. %

公开(公告)号：US20210212906A1

公开(公告)日：2021-07-15

申请号：US17032212

申请日：2020-09-25

申请人： SHOFU INC.

发明人： Shuji SAKAMOTO ,  Shun SHIMOSOYAMA ,  Katsuya KIMOTO

IPC分类号： A61K6/889 ,  A61K6/77

摘要： To provide a dental glass ionomer cement composition which exhibits high mechanical properties. The dental glass ionomer cement composition of the present disclosure comprises
(a) non-crosslinked polyalkenoic acid,
(b) water,
(c) crosslinked polyalkenoic acid: 0.01 to 10 wt. %, and
(d) acid-reactive glass powder.

公开(公告)号：US20210189098A1

公开(公告)日：2021-06-24

申请号：US17032284

申请日：2020-09-25

申请人： SHOFU INC.

发明人： Daisuke HARA ,  Kenzo YAMAMOTO ,  Yasuhiro NISHINO ,  Kazuya SHINNO

IPC分类号： C08K5/00 ,  C08F220/12 ,  C08K9/06 ,  C08K3/40 ,  C08K5/1575 ,  C08K9/02 ,  C08K3/16 ,  C08K3/11 ,  C08K3/22 ,  C08K3/30 ,  C08K3/36 ,  C08L33/12

摘要： To provide a dental curable composition having excellent curability and storage stability. The dental curable composition contains(a) transition metal adsorbent in which a transition metal compound of the period 4 in the periodic table is adsorbed on an inorganic particle which is non-reactive with a transition metal of the period 4 in the periodic table, (b) thiourea derivative, (c) organic peroxide having a hydroperoxide group, and (d) polymerizable monomer, wherein the (d) polymerizable monomer contains (d-1) acidic group-non-containing polymerizable monomer, and wherein a pore volume of the inorganic particle which is non-reactive with a transition metal of the period 4 in the periodic table is 0.2 cc/g or less.

公开(公告)号：US11033465B2

公开(公告)日：2021-06-15

申请号：US16357377

申请日：2019-03-19

申请人： SHOFU INC.

发明人： Shunsuke Miyata ,  Hidefumi Fujimura

IPC分类号： A61K6/30 ,  A61K6/71 ,  A61K6/62

摘要： To provide a one paste type dental adhesive composition which has mechanical characteristics and aesthetic property required in the restoration material, is superior in durable adhesive strength to the tooth substance, and is hard to be affected by the polymerization shrinkage stress and exhibits excellent durable adhesive strength even if the composition of the present invention is collectively filled and cured.
To provide a dental adhesive composition comprising: (a) an acidic group-non-containing polymerizable monomer, (b) an acidic group-containing polymerizable monomer, (c) a filler, (d) a photo polymerization initiator, and (e) a chain transfer agent, wherein the chain transfer agent (e) contains α-alkylstyrene compound.

公开(公告)号：US11033464B2

公开(公告)日：2021-06-15

申请号：US16205396

申请日：2018-11-30

申请人： SHOFU INC.

发明人： Daisuke Hara ,  Naoya Kitada ,  Toshiyuki Nakatsuka

IPC分类号： A61K6/30 ,  A61K6/16 ,  A61K6/62 ,  A61K6/76 ,  A61K6/77 ,  A61K6/79 ,  A61K6/884 ,  A61K6/887

摘要： To provides a polymerizable composition having high storage stability and high color stability. To provide a two-paste type dental polymerizable composition of the present invention is a two-paste type dental polymerizable composition comprising a first paste containing (A) at least one kind of polemerizable monomer, an (B) organic peroxide as a chemical polymerization initiator, and a (C) basic filler, and a second paste containing (A) at least one kind of polemerizable monomer, a (C) basic filler and an (D) aromatic amine compound as a chemical polymerization accelerator, wherein the second paste contains 30 to 80 parts by weight of the (C) basic filler based on 100 parts by weight of the total amount of the second paste.

公开(公告)号：US20210000698A1

公开(公告)日：2021-01-07

申请号：US16829226

申请日：2020-03-25

申请人： SHOFU INC.

发明人： Jun UCHIDA ,  Tomohiro KUMAGAI ,  Ken HIRATSUKA

IPC分类号： A61K6/889 ,  C08F120/56 ,  A61K6/833 ,  A61K6/20

摘要： An object of the present invention is to provide a two-paste type dental resin-reinforced glass ionomer cement composition which exhibit high surface curability even under wet conditions, which makes difficult for the surface to become cloudy even if moisture comes in contact with at the initial stage of curing, exhibits high mechanical properties, low water absorption expansion and excellent coloring resistance in the set product and is also excellent in storage stability. The two-paste type dental resin-reinforced glass ionomer cement composition of the present invention consists of two pastes, wherein at least one of the two pastes contains (a) acid-reactive glass powder, (b) polymer of acidic group-containing polymerizable monomer, (c) water, (d) hydroxyl group-containing (meth)acrylate-based polymerizable monomer, (e) tri or more functional (meth)acrylamide-based polymerizable monomer, and (f) polymerization initiator, wherein the paste containing the (c) water does not contain at least one of the (a) acid-reactive glass powder and the (b) polymer of acidic group-containing polymerizable monomer.

公开(公告)号：US10813848B2

公开(公告)日：2020-10-27

申请号：US15728789

申请日：2017-10-10

申请人： SHOFU INC.

发明人： Yusei Kadobayashi ,  Masako Shigezawa

IPC分类号： A61K6/00 ,  A61K6/40 ,  A61K6/30 ,  A61K6/60

摘要： The present invention provides the dental primer for modifying surface of a dental restoration, comprising: an organic solvent, a silane coupling agent and an acid anhydride.