DENTAL PORCELAIN

• Main Authors: SHIBATA KEIZO, KATO MAKIKO
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2022
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DENTISTRY; GLASS; HUMAN NECESSITIES; HYGIENE; JOINING GLASS TO GLASS OR OTHER MATERIALS; LIME, MAGNESIA; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MINERAL OR SLAG WOOL; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; REFRACTORIES; SLAG; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TREATMENT OF NATURAL STONE

To provide a dental porcelain that has high masking properties, resists discoloration, and is suitable for zirconia crown.SOLUTION: A dental porcelain comprises a glass component and crystalline TiO2, with the content of the crystalline TiO2 of 15 mass% or more and 25 mass% or less. The total mass of the crystalline TiO2 and amorphous TiO2 may be 18 mass% or more and 35 mass% or less. The glass component may be aluminosilicate glass. The aluminosilicate glass may comprise 60.0 mass%-70.0 mass% of SiO2.SELECTED DRAWING: None 【課題】遮蔽性が高く、陶材の変色を抑制し、ジルコニア冠に適した歯科用陶材を提供すること。【解決手段】ガラス成分及び結晶質のＴｉＯ2を含み、前記結晶質のＴｉＯ2の含有量が１５質量％以上２５質量％以下である、歯科用陶材とする。結晶質のＴｉＯ2及び非晶質のＴｉＯ2の合計質量は、１８質量％以上３５質量％以下であってもよい。ガラス成分は、アルミノケイ酸塩ガラスであってもよい。アルミノケイ酸塩ガラスは、６０．０質量％～７０．０質量％のＳｉＯ2を含有していてもよい。【選択図】なし