Gc Corporation

Mizuki Nakayama

Tomohiro Kumagai

Tetsuro Sakuma

Ryosuke Yoshimitsu

Yusuke Shimada

Naofumi Matsumoto

Toshihiro Sekiguchi

Ayaka Fujimoto

Yasuhiro Odanaka

Nobuhito Takagi

Daiki Machida

One aspect of the present invention relates to a dental fluoroaluminosilicate glass powder, a 50th percentile volume diameter of which is 5.0 &#x3bc;m or more and 9.0 &#x3bc;m or less, and a 10th percentile volume diameter of which is 2.4 &#x3bc;m or more.

Dental fluoroaluminosilicate glass powder

To photograph teeth and dental shade guides including marks indicating color tones of a color samples together in large size and particularly, without making the photographing distance far from the teeth, irrespective of the color samples to plate-shaped handle parts, in the dental shade guide, has a color sample modeling a form of an artificial tooth of an anterior tooth and a tag having a mark indication part are attached at one end of a plate-shaped handle part rotatably around an axis, the tag is attached at a lingual surface side of the color sample, and the mark indication part protrudes 1 to 15 mm at the maximum only from a tooth root directional end or side of the color sample.

Dental shade guide having tag with mark indication part

A paste-like polymerizable composition in which two or three pastes are intimately mixed with each other to polymerize, the pastes do not gel and their polymerization curing times being stable, even when the pastes before the polymerization are preserved for a long time, the paste-like polymerizable composition is constructed of a first paste containing (a) a (meth)acrylate having at least one unsaturated double bond, (b) a filler and (c) a pyrimidinetrione derivative; and a second paste containing (a) a (meth)acrylate having at least one unsaturated double bond, (b) a filler, (d) an organic halide and (e) an organometallic compound, or a third paste containing (a) a (meth)acrylate having at least one unsaturated double bond, (b) a filler and (d) an organic halide and a fourth paste containing (a) a (meth)acrylate having at least one unsaturated double bond, (b) a filler and (e) an organometallic compound.

Paste-like polymerizable composition

There is provided a resin composition for soft relining material that can meet the performances required in a soft relining material for denture base, such as a proper softness and fitness between a denture base and an oral mucosa, without using a phthalate-based plasticizer widely used in the conventional art resin composition for soft relining material, which is pointed out to have a possibility for influencing living bodies as an endocrine disruptor. The soft resin composition for denture base is constructed of (a) a (meth)acrylate monomer having at least one unsaturated double bond; (b) an aliphatic acid ester-based plasticizer; (c) a (meth)acrylate polymer or copolymer; and (d) a polymerization initiator.

Resin composition for soft relining material

A metal surface treatment agent is disclosed, comprising from 0.001 to 10% by weight of a polymerizable monomer containing a thiophenecarboxylic acid ester group therein and from 0.001 to 10% by weight of a polymerizable monomer containing a phosphoric acid ester group therein dissolved in an organic solvent. According to the invention, there is provided a metal surface treatment agent which can impart a high adhesive strength with superior durability to various metals including base metals to noble metals in adhesion of a macromolecular material to a metal by extremely simple processing and is good in storage stability.

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Tokyo, Japan

Mizuki Nakayama