Gc Corporation

Go Mashio

Tatsuya Fujimoto

Daisuke Ohta

Tomohiro Hoshino

Toshihiko Azuma

Fumiya Sato

Shigenori Akiyama

Daizaburo Mori

Hayato Yokohara

Masatoshi Yoshinaga

Takahiro Miyake

Akio Takahashi

Shuji Kariya

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

JIG for dental prosthesis

Jig 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.

Method for manufacturing dental prosthesis

To provide a zirconia-based composite ceramic sintered compact capable of being colored to white appropriate for a dental prosthesis while maintaining its mechanical and physical properties, and also provide a method for producing the same. The method for producing the zirconia-based composite ceramic sintered compact includes semi-sintering a zirconia-alumina composite ceramic containing an alumina particle and a zirconia particle comprising of tetragonal zirconia containing ceria of 8 to 12 mol %, forming the composite ceramic; dipping the formed composite ceramic in a neodymium ion solution or complex solution; drying the dipped composite ceramic; and finally sintering it.

Zirconia-based composite ceramic sintered compact and method for producing the same

To provide a dental abutment having an embedded part embedded into an embedding hole of a block and fixed in the embedding hole. An uniform gap for a dental adhesive can be formed along an approximately entire circumference between an outer peripheral surface of the embedded part and an inner surface of the embedding hole. The dental abutment includes a gingiva contact parthaving a forward-thicker truncated conical shape on the intraoral side; a fitting partprojecting toward the jawbone side from the jawbone-side contact surfaceof the gingiva contact part, and fitted into an end part on the intraoral side of the implant fixture so as not to rotate; and an embedded partto be embedded. Three or more projecting line partsare formed on an outer peripheral surfaceof the embedded partso as to form the uniform gap.

Growing community of inventors

Tokyo, Japan

Go Mashio