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    Dental mill blank with intermediate color layer at 30% position
    72.
    发明授权
    Dental mill blank with intermediate color layer at 30% position 有权

    公开(公告)号：US10588726B2

    公开(公告)日：2020-03-17

    申请号：US15627690

    申请日：2017-06-20

    Applicant: SHOFU INC.

    Inventor： Yasuhiro Torita ,  Yusei Kadobayashi

    IPC: A61C13/00 ,  A61C5/77 ,  A61C13/09 ,  A61C13/08

    Abstract: A dental mill blank having a multi-layer structure has been required to improve the reproducibility of a color tone of the natural tooth in a dental crown restoration cut by CAD/CAM technique. Especially, a reproduction of the color tone of a cavity or a groove is required in a dental crown form of the molar tooth. The present dental mill blank has three or more layers wherein a color of a 30% position layer which includes a 30% position which is a position spaced from a surface of the dental mill blank of a W layer-side by 30% satisfies a specified relational expression, and a contrast ratio of the 30% position layer is within a range of the contrast ratio of the D layer×(0.70 to 1.00).

    DENTAL ADHESIVE COMPOSITION INCLUDING CHAIN TRANSFER AGENT
    73.
    发明申请
    DENTAL ADHESIVE COMPOSITION INCLUDING CHAIN TRANSFER AGENT 审中-公开

    公开(公告)号：US20200016043A1

    公开(公告)日：2020-01-16

    申请号：US16357377

    申请日：2019-03-19

    Applicant: SHOFU INC.

    Inventor： Shunsuke MIYATA ,  Hidefumi FUJIMURA

    IPC: A61K6/00

    Abstract: 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.

    OPAQUE IMPARTING LIQUID FOR ZIRCONIA
    74.
    发明申请
    OPAQUE IMPARTING LIQUID FOR ZIRCONIA 审中-公开

    公开(公告)号：US20190388196A1

    公开(公告)日：2019-12-26

    申请号：US16367459

    申请日：2019-03-28

    Applicant: SHOFU INC.

    Inventor： Toshio KITAMURA ,  Shuhei TAKAHASHI

    IPC: A61C13/00 ,  A61C13/08 ,  C04B35/48 ,  C04B41/00 ,  C04B41/46 ,  C04B41/49

    Abstract: To provide a liquid material which can only adjust transparency by applying on a part of a zirconia crown having high transparency, without coloring.The present disclosure provides an opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, comprising; (a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound, (b) 60 to 89 wt. % of water, and (c) 1 to 20 wt. % of an organic solvent.

    Al2O3-free lithium silicate glass composition
    75.
    发明授权
    Al2O3-free lithium silicate glass composition 有权

    公开(公告)号：US10391039B2

    公开(公告)日：2019-08-27

    申请号：US15475494

    申请日：2017-03-31

    Applicant: SHOFU INC.

    Inventor： Daisuke Takeuchi ,  Mitsuji Teramae

    IPC: C03C3/097 ,  C03C3/076 ,  C03C10/04 ,  A61K6/027 ,  A61K6/02 ,  A61C5/77 ,  C03B32/02 ,  C03C4/00 ,  A61K6/00

    Abstract: To provide a dental lithium silicate glass composition capable of providing a dental lithium silicate glass ceramic capable of efficiently precipitating the main crystals (lithium disilicate and/or lithium metasilicate) even after heat treatment.To provide a Al2O3-free dental lithium silicate glass composition including 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, ZrO2: 0.0 to 5.0% by weight, a nucleating agent: 1.0 to 6.0% by weight, a glass stabilizer: 0.0 to 8.0% by weight and a colorant: 0.0 to 10.0% by weight.

    Dental polymerizable monomer compositions
    77.
    发明授权
    Dental polymerizable monomer compositions 有权

    公开(公告)号：US10130563B2

    公开(公告)日：2018-11-20

    申请号：US15300669

    申请日：2015-03-31

    Applicant: MITSUI CHEMICALS, INC. ,  SHOFU INC. ,  SUN MEDICAL CO., LTD.

    Inventor： Kazuhiko Yoshinaga ,  Hiroshi Naruse ,  Mitsuji Teramae ,  Kiyomi Fuchigami ,  Hidefumi Fujimura ,  Masuji Tsuchikawa ,  Hirofumi Imai

    IPC: A61K6/083 ,  A61K6/00 ,  C07C271/20

    Abstract: Provided are dental polymerizable monomer compositions that can give cured products having high toughness and high rigidity, and dental compositions containing such dental polymerizable monomer compositions and cured products thereof having high mechanical properties. The dental polymerizable monomer composition includes a urethane acrylate compound (A) and a polymerizable compound (B) having at least one polymerizable group selected from methacryloyl groups and acryloyl groups, the urethane acrylate compound (A) being obtained by reacting a specific hydroxyacrylate (a1) with a diisocyanate (a2) having two isocyanate groups bonded to a divalent C6-9 aromatic hydrocarbon group or a divalent C6-9 bridged cyclic hydrocarbon group via a methylene group optionally substituted with a hydrocarbon group in place of a hydrogen atom, the proportion of the number of acryloyl groups present in the urethane acrylate compound (A) being 10% to less than 90% relative to the total number of (meth)acryloyl groups in the monomer composition.

    Applicator that allows easy mounting and removal of cartridge
    79.
    发明授权
    Applicator that allows easy mounting and removal of cartridge 有权

    公开(公告)号：US09975140B2

    公开(公告)日：2018-05-22

    申请号：US15206458

    申请日：2016-07-11

    Applicant: SHOFU INC.

    Inventor： Ryouji Takei ,  Akira Yoneda ,  Shuji Sakamoto ,  Yusei Kadobayashi

    IPC: B05C17/005 ,  A61M5/24 ,  A61C5/62 ,  A61C5/66 ,  B05C17/01

    CPC classification number: B05C17/00593 ,  A61C5/62 ,  A61C5/66 ,  A61M5/2425 ,  B05C17/00516 ,  B05C17/00596 ,  B05C17/01

    Abstract: A cartridge fitting portion of a cylindrical syringe made of a resin includes an end surface opening portion, a continuous opening portion continuous with the end surface opening portion, opened in a radial direction, and extending in an extending direction, and a recess portion configured to communicate with the end surface opening portion, the continuous opening portion, and an internal passage in a cylindrical body. The recess portion includes a flange fitting recess to be fitted with a flange portion of a cartridge, and a cylindrical portion fitting recess that communicates with the flange fitting recess and is fitted with a part of the cylindrical portion. A wall portion surrounding the cylindrical portion fitting recess of the cartridge fitting portion is configured to warp into snap engagement with the part of the cylindrical portion when the part of the cylindrical portion is inserted from the continuous opening portion.

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