Shofu Inc.

Kabushikikaisha Shofu

Yoshiyuki Jogetsu

Toshiyuki Nakatsuka

Daisuke Hara

Toshio Kitamura

Masanori Goto

Satoshi Takano

Kunio Ikemura

Tomohiro Kai

Kenzo Yamamoto

Naoya Kitada

Kazuya Shinno

Akihiro Nagafuji

Shingo Tateishi

Yasuhiro Nishino

So Ito

Kensuke Ichizawa

A dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

Dental curable composition including chain transfer agent

[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

The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

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.

Dental conditioning composition

The present invention is directed to compounds and adhesives finding special utility in dental applications. Compounds of formulae: are of special interest, wherein: 

Polymerizable phosphonic acid derivative and adhesive composition comprising the same

A compound that exhibits excellent color tone stability and physical properties as well as excellent photopolymerization activity over a wide region from near-ultraviolet to visible region, permitting relaxed operation under ambient light, so that wide application can be found in the dental field and photopolymerization industry; and a relevant photopolymerization initiator and hardenable composition. In particular, there is provided a novel camphorquinone derivative having an acylphosphine oxide group [&#x2014;(C&#x2550;O)&#x2014;(P&#x2550;O)&#x3c;] in each molecule. Further, there is provided a photopolymerization initiator comprising the camphorquinone derivative having an acrylphosphine oxide group [&#x2014;(C&#x2550;O)&#x2014;(P&#x2550;O)&#x3c;] in each molecule as an indispensable component, loaded with at least one member selected from among a polymerization accelerator, a photoacid generator, a photosensitizer and a (bis)acylphosphine oxide, and provided a hardenable composition comprising the initiator. The thus provided photopolymerization initiator and hardenable composition exhibit excellent color tone stability and physical properties as well as excellent photopolymeritzaion activity over an ultraviolet and visible wide wavelength region, permitting relaxed operation under ambient light, so that wide application can be found in the dental field and photopolymerization industry.

Camphorquinone derivative having acylphosphine oxide group, photopolymerization initiator and photo/chemical polymerization initiator containing the same and hardenable composition containing the same

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Kyoto, Japan

Yoshiyuki Jogetsu