Gc Corporation

Tatsuya Fujimoto

Go Mashio

Daisuke Ohta

Hayato Yokohara

Tomohiro Hoshino

Masatoshi Yoshinaga

Kenji Kojima

Daizaburo Mori

Toshihiko Azuma

Takahiro Miyake

Yoshie Nomura

To provide a composite for a dental pattern resin whose shrinkage when curing and expansion when heated can be both suppressed as its usability is kept, the composite for a dental pattern resin includes a liquid formulation and a powder formulation, wherein the liquid formulation includes a polymerizable monofunctional (meth)acrylate, a polymerizable polyfunctional (meth)acrylate, and a polymerization accelerator, and the powder formulation includes more than 5 mass % of a (meth)acrylate copolymer on the basis of the total powder formulation.

Composite for dental pattern resin

A processing machine and a method of using the processing machine to process a block to form a dental prosthesis is provided. The processing machine includes a polishing jig. The polishing jig is for machining tools which makes it possible for a deteriorating machining tool to be used again without detaching the machining tool, with which the processing machine is equipped, from the processing machine. The polishing jig for machining tools comprises an attachment part to be attached to the processing machine; and a polishing face that is at least part of a surface of the polishing jig, the polishing face adapted to polish a processing part of a machining tool.

Method of forming a dental prosthesis

Provided is a block body that makes it possible to quickly produce a dental prosthesis with a good accuracy. A material of the block body including SiOin an amount of 60.0 mass % to 80.0 mass %, LiO in an amount of 10.0 mass % to 20.0 mass %, AlOin an amount of 5.1 mass % to 10.0 mass %, wherein the block body is formed in a column, and a main crystalline phase of the block body is lithium disilicate.

Method for producing dental prosthesis, method for producing lithium disilicate blank for dental prosthesis and lithium disilicate blank for dental prosthesis

Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO, no less than 10.0 mass % and no more than 20.0 mass % of LiO, and no less than 5.1 mass % and no more than 10.0 mass % of AlO; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.

An object is to provide a method for manufacturing a dental prosthesis consisting of a plurality of layers with high productivity. The method for manufacturing a dental prosthesis comprises: filling a cavity () formed in a mold which has a shape of the dental prosthesis with a layered material body () that is made by layering materials () corresponding to the plurality of layers; and after this filling, rotating the mold on a material inlet () of the mold and cutting the materials.

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Tokyo, Japan

Tatsuya Fujimoto