Shofu Inc.

Kabushikikaisha Shofu

Daisuke Hara

Kenzo Yamamoto

Toshiyuki Nakatsuka

Naoya Kitada

Shunsuke Miyata

Kazuya Shinno

Akihiro Nagafuji

Shuji Sakamoto

Hidefumi Fujimura

Hideto Kasaba

Yoshiyuki Jogetsu

Yuji Sadakane

Katsura Ishikawa

Yasuhiro Nishino

Yusei Kadobayashi

Hiroyuki Kobayashi

Rei Nishimura

Shingo Tateishi

Satoshi Fujiwara

Yoshiyuki Mizoguchi

Kenzou Yamamoto

Masahiro Kakimoto

Yuuta Yamada

Hirokazu Muranushi

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.

Dental photocurable composition having excellent storage stability

[Problem] To provide a dental photocurable composition which has sufficient mechanical property and whose rheological property is not deactivated even after long-term storage. [Solution] The dental photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (D1) aliphatic tertiary amine compound represented by formula (1) as the (D) photopolymerization accelerator, and the dental photocurable composition comprises (E1) hydrophobized silica fine particle having an average diameter of primary particle of 1 to 40 nm as the (E) filler. (wherein Rrepresents a substituent consisting of three or more carbons having an electron-withdrawing group at α-carbon and/or β-carbon of an amine starting from N, Rrepresents a substituent consisting of three or more carbons which may have an electron-withdrawing group, Rrepresents a substituent consisting of one or more carbons which may have an electron-withdrawing group, and α-carbon of N in the formula (1) is not an electron-withdrawing group.)

Dental photocurable composition excellent in operability and storage stability

The present invention provides a photopolymerization initiator capable of exhibiting excellent sensitivity to photopolymerization and ensuring a sufficient pot life under ambient light, and a dental photocurable composition comprising the photopolymerization initiator. More specifically, the present invention provides a photopolymerization initiator (c) used in a dental photocurable composition, comprising: (c-1) a photosensitizer, (c-2) a polymerization accelerator, and (c-3) an aryliodonium salt represented by the formula (1): [Chemical Formula 1][()[()]&#x2003;&#x2003;()wherein, R1 represents an organic group bonded to I, R2 represents an alkyl group in which a part of hydrogen atoms is substituted with a flourine atom, and b represents the number thereof which is an integer of from 1 to 5, and a dental photocurable composition comprising the photopolymerization initiator.

Photopolymerization initiator comprising an aryliodonium salt for dental photocurable compositions

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.

Curable composition containing transition metal adsorbent

[Problem] To provide a dental photocurable composition having sufficient mechanical property and being excellent in color tone selectivity because of having a small color difference between before curing and after curing. [Solution] To provide a dental photocurable composition, comprising (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (B-1) &#x3b1;-diketone compound as the (B) photosensitizer, and the dental photocurable composition comprises, with respect to 100 parts by mass of the (A) polymerizable monomer, 0.15 parts by mass or less of the (B-1) &#x3b1;-diketone compound, 0.5 parts by mass or more of the (C) photoacid generator, and 100 parts by mass or more of the (E) filler.

Dental photocurable composition excellent in color tone selectivity

To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO; 15% to 30% by mass AlO; 5% to 20% by mass BO; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass NaO.

Dental composition containing ion sustained-release glass

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 &#x2212;4 or less.

Dental photocurable composition containing high soluble photoacid generator

[Problem] To provide a photocurable composition having a high curing depth. [Solution] To provide a photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, and (D) photopolymerization accelerator, wherein, the photocurable composition comprises (D-1) amine compound represented by formula (1) as the (D) photopolymerization accelerator. (In the formula (1), Ris a substituent represented by formula (2), and Rand Rare substituents represented by formula (2) or substituents selected from &#x2014;OH group, &#x2014;O&#x2014; group, &#x2014;S&#x2014; group, &#x2014;NH&#x2014;C(O)&#x2014;NH&#x2014; group, &#x2014;C(O)&#x2014;O&#x2014; group, &#x2014;OC(O)&#x2014; group, &#x2014;OC(O)&#x2014;NH&#x2014; group, &#x2014;NH&#x2014;C(O)&#x2014;O&#x2014; group, halogen, an organic group which may have an alkoxysilyl group, an aromatic ring which may have a substituent and an alicyclic heterocycle which may have a substituent. Further, Rand Rmay be H when at least one or more Rs of the formula (2) are an aromatic ring, and Rmay be H when Ris a substituent represented by the formula (2)).

Photocurable composition excellent in curing depth

[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:

Dental cement kit

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.

Composition with excellent storage stability using highly basic filler

A mixing container for mixing multiple materials comprises a container body in which multiple storage chambers are formed in a storage part by a partition wall that is a raised portion of a wall surface forming the storage part, and a lid member attached to the container body such that the multiple storage chambers are separately sealed; the partition wall is configured to be deformable into a concave part recessed in a movement direction of the partition wall through movement in a direction from the lid member toward the container body with a circumferential edge of the storage part sealed to the lid member; and when the partition wall is deformed into the concave part, the multiple storage chambers are deformed into one storage chamber.

Mixing container, mixing container kit, method of using mixing container or mixing container kit, and assistive device of mixing container

A primer composition for a resin cured material according to the present disclosure comprising (A) a polymerizable monomer having a solubility parameter (an SP value) in the range of from 7.0 to 10.0, (B) a volatile organic solvent, (C) a polymerization catalyst and/or a polymerization accelerator, and (D) a polymerizable monomer having at least two polymerizable group.

Dental primer composition having adhesive property to resin cured material

The present invention relates to a deagglomerated glass filler for sustained ion release for imparting ion sustained-release property to a dental material for use in the dental field. The dental material means a material for use in filling, prosthetic repair, temporary sealing, temporary bonding, preparation of a prosthetic appliance, adhesion/luting, pit and fissure sealing, or the like in a dental treatment. A glass filler for sustained ion release that sufficiently continuously releases a metal ion present in a glass composition as compared with a conventional glass filler for sustained ion release has been demanded in the field of a dental material. Such an object is achieved by a glass filler for sustained ion release that is obtained by performing a silane compound treatment step and an acidic polymer treatment step and that is controlled to satisfy a specific D50 particle size relationship in each of the steps.

Filler characterized by acidic polymer treatment method

A dental conditioning composition that enhances the adhesiveness of any dental material for a tooth surface by suppressing any excessive demineralization for the tooth surface and improving the polymerization activity of a dental adhesive composition by causing a polymerization catalyst included in the dental conditioning composition of the present invention to remain on the tooth surface. A dental conditioning composition having a gel character, that includes a polymerization catalyst, an acidic compound, water, and a thickening agent, and whose pH (the hydrogen ion exponent) is in a range from 0.1 to 0.9.

Growing community of inventors

Kyoto, Japan

Daisuke Hara