公开(公告)号：US20200214819A1

公开(公告)日：2020-07-09

申请号：US16575867

申请日：2019-09-19

Applicant: SHOFU INC.

Inventor： Daisuke HARA ,  Naoya KITADA ,  Kenzo YAMAMOTO ,  Yasuhiro NISHINO ,  Yoshiyuki JOGETSU

IPC: A61C19/10

Abstract: [Problem]To select a dental cement or a trial test material for easily obtaining high color tone adaptability to peripheral tooth substances, in mounting of or trial test of a prosthesis device[Solution]To provide a dental cement set consisting of a plurality of dental cements having color tones including color tones of 3 to n colors for selecting and using a dental cement from the plurality of dental cements having the color tones including the color tones of the 3 to n colors after trial test with trial test materials for the dental cement to be used from the plurality of dental cements having the color tones including the color tones of the 3 to n colors, wherein: the amount of information loss Pin with regard to first principal component determined by principal component analysis is less than 2, and . the dental cement set satisfies following Formula 1. 2≤((CL*p−1−CL*p)2 +(Ca*p−1−Ca*p)2 +(Cb*p−1−Cb*p)2)1/2

公开(公告)号：US20210189098A1

公开(公告)日：2021-06-24

申请号：US17032284

申请日：2020-09-25

Applicant: SHOFU INC.

Inventor： Daisuke HARA ,  Kenzo YAMAMOTO ,  Yasuhiro NISHINO ,  Kazuya SHINNO

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

Abstract: 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：US20220023155A1

公开(公告)日：2022-01-27

申请号：US17211039

申请日：2021-03-24

Applicant: SHOFU INC.

Inventor： Kenzo YAMAMOTO ,  Daisuke HARA ,  Yasuhiro NISHINO ,  Naoya KITADA

IPC: A61K6/30 ,  C09J183/04 ,  C09J133/26

Abstract: [Problem]
To provide a dental adhesive composition realizing excellent durable adhesive strength with respect to various dental restorative materials for cutting and machining such as glass ceramics containing lithium disilicate, a dental resin for cutting and machining, and a dental resin for cutting and machining made of a glass fiber reinforced resin in particular and with respect to a tooth substance, and having excellent storage stability simultaneously.
[Solution]
The dental adhesive composition of the present invention comprises a matrix containing (A1) silane coupling material represented by structural formula of [Chemical formula 1], (B) polymerizable monomer having an acidic group and (C) polymerizable monomer having no acidic group, and wherein the (C) polymerizable monomer having no acidic group contains (C1) polymerizable monomer having no acidic group and having one or more hydroxyl groups, the (A1) silane coupling material represented by structural formula of [Chemical formula 1] and the (C1) polymerizable monomer having no acidic group and having one or more hydroxyl groups coexist in at least one matrix, and the dental adhesive composition satisfies at least one of following formulas (1) and (2). 0.005≤Total amount of silane coupling material compounding amount index in matrix ((S1×W1)/M1)≤0.070   [Formula (1)] 0.001≤Total amount of silane coupling material compounding amount index in composition ((S2×W2)/M2)≤0.015   [Formula (2)]